Byted Tos Image Process

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tos

# Copyright (c) 2025 Beijing Volcano Engine Technology Co., Ltd. and/or its affiliates.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

#!/usr/bin/env python3
"""Example script: apply image blind watermark using TOS image processing.

Builds `process="image/blindwatermark,..."` and either:
  - saves the processed image locally via `get_object_to_file` (default), or
  - saves it back to TOS via `get_object(..., save_bucket=..., save_object=...)`.

Blind watermark parameters are subject to the official TOS documentation.
Pass parameters using repeated `--kv key=value`, and the script will append them
as `key_value` segments in the process string.

If blind watermark is not enabled for the current account or bucket, the script
prints `[SKIP]` and exits successfully by default. Use `--strict` to convert
that case into a hard failure.

Environment variables:
  - TOS_ACCESS_KEY, TOS_SECRET_KEY, TOS_SECURITY_TOKEN(optional)
  - TOS_ENDPOINT, TOS_REGION
  - TOS_BUCKET, TOS_OBJECT_KEY
Note: Blind watermark requires account-level permission to be enabled.
The source image must be at least 512x512 pixels.
Parameter semantics are subject to the official TOS documentation.
"""

import argparse
import base64
import json
import os
import sys
from typing import Optional

import tos
from tos.exceptions import TosClientError, TosServerError


def get_env(name: str, required: bool = True, default: Optional[str] = None) -> str:
    value = os.getenv(name, default)
    if required and not value:
        print(f"[ERROR] Environment variable {name} is required.", file=sys.stderr)
        sys.exit(1)
    return value  # type: ignore[return-value]


def create_client() -> tos.TosClientV2:
    ak = get_env("TOS_ACCESS_KEY")
    sk = get_env("TOS_SECRET_KEY")
    endpoint = get_env("TOS_ENDPOINT")
    region = get_env("TOS_REGION")
    security_token = os.getenv("TOS_SECURITY_TOKEN")

    print(
        f"[INFO] Initializing TOS client for endpoint={endpoint}, region={region} ..."
    )
    return tos.TosClientV2(
        ak=ak,
        sk=sk,
        endpoint=endpoint,
        region=region,
        security_token=security_token,
    )


def parse_kv_list(items: list[str]) -> list[tuple[str, str]]:
    pairs: list[tuple[str, str]] = []
    for item in items:
        if "=" not in item:
            raise ValueError(f"Invalid --kv '{item}', expected key=value")
        k, v = item.split("=", 1)
        k = k.strip()
        v = v.strip()
        if not k:
            raise ValueError(f"Invalid --kv '{item}', key is empty")
        pairs.append((k, v))
    return pairs


def build_process(op: str, pairs: list[tuple[str, str]]) -> str:
    base = f"image/{op}"
    if not pairs:
        return base
    return base + "," + ",".join([f"{k}_{v}" for k, v in pairs])


def default_output_path(key: str) -> str:
    base = os.path.basename(key)
    if not base:
        return "blindwatermarked_output"
    return f"blindwatermarked_{base}"


def main() -> None:
    parser = argparse.ArgumentParser(
        description="Apply blind watermark via TOS process=image/blindwatermark"
    )
    parser.add_argument("--bucket", type=str, default=None, help="Override TOS_BUCKET")
    parser.add_argument("--key", type=str, default=None, help="Override TOS_OBJECT_KEY")
    parser.add_argument(
        "--kv", action="append", default=[], help="Blind watermark option: key=value"
    )
    parser.add_argument("--output", type=str, default=None, help="Local output file")
    parser.add_argument(
        "--saveas-bucket", type=str, default=None, help="Save result to this bucket"
    )
    parser.add_argument(
        "--saveas-object", type=str, default=None, help="Save result as this object key"
    )
    parser.add_argument(
        "--strict",
        action="store_true",
        help="If set, treat AccessDenied (blind watermark not enabled) as a hard failure.",
    )
    parser.add_argument("--json", action="store_true", help="Print machine-readable JSON only")
    parser.add_argument("--dry-run", action="store_true", help="Print resolved request and exit")
    args = parser.parse_args()

    if not args.kv:
        print(
            "[ERROR] At least one --kv key=value is required for blind watermark parameters.",
            file=sys.stderr,
        )
        sys.exit(1)

    client = create_client()
    bucket = args.bucket or get_env("TOS_BUCKET")
    key = args.key or get_env("TOS_OBJECT_KEY")

    try:
        pairs = parse_kv_list(args.kv)
    except ValueError as e:
        print(f"[ERROR] {e}", file=sys.stderr)
        sys.exit(1)

    process_value = build_process("blindwatermark", pairs)

    save_bucket = args.saveas_bucket
    save_object = args.saveas_object
    persist_to_tos = bool(save_bucket or save_object)

    if persist_to_tos:
        save_bucket = save_bucket or bucket
        if not save_object:
            save_object = f"blindwatermarked_{os.path.basename(key)}"

        print(
            f"[INFO] Blind-watermarking {bucket}/{key} -> {save_bucket}/{save_object}"
        )
        print(f"[INFO] process = {process_value}")

        encoded_bucket = base64.urlsafe_b64encode(save_bucket.encode()).decode()
        encoded_object = base64.urlsafe_b64encode(save_object.encode()).decode()

        try:
            output = client.get_object(
                bucket=bucket,
                key=key,
                process=process_value,
                save_bucket=encoded_bucket,
                save_object=encoded_object,
            )
            raw = output.read()
        except TosServerError as e:
            print(
                f"[ERROR] TOS server error: code={e.code}, status={e.status_code}, "
                f"request_id={e.request_id}, message={e.message}",
                file=sys.stderr,
            )
            sys.exit(1)
        except TosClientError as e:
            print(f"[ERROR] TOS client error: {e}", file=sys.stderr)
            sys.exit(1)

        try:
            data = json.loads(raw.decode("utf-8"))
        except Exception as exc:  # noqa: BLE001
            print("[ERROR] Failed to parse save result as JSON:", file=sys.stderr)
            print(exc, file=sys.stderr)
            print(raw[:200], file=sys.stderr)
            sys.exit(1)

        print("[OK] Image saved to TOS:")
        print(json.dumps(data, indent=2, ensure_ascii=False))
        return

    output_path = args.output or default_output_path(key)
    print(f"[INFO] Blind-watermarking {bucket}/{key} -> {output_path}")
    print(f"[INFO] process = {process_value}")

    try:
        client.get_object_to_file(
            bucket=bucket, key=key, file_path=output_path, process=process_value
        )
    except TosServerError as e:
        if e.code == "AccessDenied":
            print(
                "[SKIP] Blind watermark is not enabled for this account/bucket.",
                file=sys.stderr,
            )
            print(
                "[SKIP] Please enable the blind watermark feature in the TOS console, "
                "or re-run with --strict to treat this as a hard failure.",
                file=sys.stderr,
            )
            if args.strict:
                sys.exit(1)
            sys.exit(0)
        if e.code == "InvalidBlindWatermarkParam" and "should larger than" in (
            e.message or ""
        ):
            print(
                f"[ERROR] {e.message}",
                file=sys.stderr,
            )
            print(
                "[ERROR] The source image is too small. Blind watermark requires "
                "the image to be at least 512x512 pixels.",
                file=sys.stderr,
            )
            sys.exit(1)
        print(
            f"[ERROR] TOS server error: code={e.code}, status={e.status_code}, "
            f"request_id={e.request_id}, message={e.message}",
            file=sys.stderr,
        )
        sys.exit(1)
    except TosClientError as e:
        print(f"[ERROR] TOS client error: {e}", file=sys.stderr)
        sys.exit(1)

    size = os.path.getsize(output_path)
    print(f"[OK] Image saved to {output_path} ({size} bytes)")


if __name__ == "__main__":
    main()

# Copyright (c) 2025 Beijing Volcano Engine Technology Co., Ltd. and/or its affiliates.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

#!/usr/bin/env python3

"""Draw points and optional lines on an image stored in TOS.

This script wraps the TOS `image/draw` process:
  - p: points, e.g. 50x50-100x100-200x200
  - r: point radius
  - l: whether to connect points with lines
  - lw: line width
  - color: RGB hex without '#'

It can save the result locally or persist the processed image back to TOS.
"""

import argparse
import base64
import json
import os
import re
import sys
from typing import Optional

import tos
from tos.exceptions import TosClientError, TosServerError

POINT_RE = re.compile(r"^\d+x\d+(?:-\d+x\d+)*$")
COLOR_RE = re.compile(r"^[0-9A-Fa-f]{6}$")


def get_env(name: str, required: bool = True, default: Optional[str] = None) -> str:
    value = os.getenv(name, default)
    if required and not value:
        print(f"[ERROR] Environment variable {name} is required.", file=sys.stderr)
        sys.exit(1)
    return value  # type: ignore[return-value]


def create_client() -> tos.TosClientV2:
    ak = get_env("TOS_ACCESS_KEY")
    sk = get_env("TOS_SECRET_KEY")
    endpoint = get_env("TOS_ENDPOINT")
    region = get_env("TOS_REGION")
    security_token = os.getenv("TOS_SECURITY_TOKEN")

    print(
        f"[INFO] Initializing TOS client for endpoint={endpoint}, region={region} ..."
    )
    return tos.TosClientV2(
        ak=ak,
        sk=sk,
        endpoint=endpoint,
        region=region,
        security_token=security_token,
    )


def maybe_print_json(raw: bytes) -> bool:
    try:
        text = raw.decode("utf-8")
        data = json.loads(text)
        print(json.dumps(data, indent=2, ensure_ascii=False))
        return True
    except Exception:
        return False


def build_process_value(
    points: str, radius: int, draw_line: bool, line_width: int, color: str
) -> str:
    parts = [
        f"p_{points}",
        f"r_{radius}",
        f"l_{str(draw_line).lower()}",
        f"lw_{line_width}",
        f"color_{color.upper()}",
    ]
    return "image/draw," + ",".join(parts)


def main() -> None:
    parser = argparse.ArgumentParser(description="Draw points/lines on a TOS image")
    parser.add_argument("--bucket", type=str, default=None, help="Override TOS_BUCKET")
    parser.add_argument("--key", type=str, default=None, help="Override TOS_OBJECT_KEY")
    parser.add_argument(
        "--points",
        type=str,
        required=True,
        help="Point list, e.g. 50x50-100x100-200x200",
    )
    parser.add_argument("--radius", type=int, default=6, help="Point radius in pixels")
    parser.add_argument(
        "--line",
        action="store_true",
        help="Connect points with lines",
    )
    parser.add_argument(
        "--line-width", type=int, default=3, help="Line width in pixels"
    )
    parser.add_argument(
        "--color",
        type=str,
        default="FFFFFF",
        help="RGB hex color without '#', e.g. FF0000",
    )
    parser.add_argument(
        "--output", type=str, default=None, help="Local output file path"
    )
    parser.add_argument(
        "--saveas-bucket", type=str, default=None, help="Save result to this bucket"
    )
    parser.add_argument(
        "--saveas-object", type=str, default=None, help="Save result as this object key"
    )
    parser.add_argument("--json", action="store_true", help="Print machine-readable JSON only")
    parser.add_argument("--dry-run", action="store_true", help="Print resolved request and exit")
    args = parser.parse_args()

    if not POINT_RE.match(args.points):
        print("[ERROR] --points must look like 50x50-100x100-200x200", file=sys.stderr)
        sys.exit(1)
    if args.radius < 0:
        print("[ERROR] --radius must be >= 0", file=sys.stderr)
        sys.exit(1)
    if args.line_width < 0:
        print("[ERROR] --line-width must be >= 0", file=sys.stderr)
        sys.exit(1)
    if not COLOR_RE.match(args.color):
        print(
            "[ERROR] --color must be a 6-digit RGB hex string, e.g. FF0000",
            file=sys.stderr,
        )
        sys.exit(1)

    client = create_client()
    bucket = args.bucket or get_env("TOS_BUCKET")
    key = args.key or get_env("TOS_OBJECT_KEY")
    process_value = build_process_value(
        points=args.points,
        radius=args.radius,
        draw_line=args.line,
        line_width=args.line_width,
        color=args.color,
    )

    save_bucket = args.saveas_bucket
    save_object = args.saveas_object
    persist_to_tos = bool(save_bucket or save_object)

    print(f"[INFO] process = {process_value}")

    if persist_to_tos:
        save_bucket = save_bucket or bucket
        if not save_object:
            save_object = f"draw_{os.path.basename(key)}"
        encoded_bucket = base64.urlsafe_b64encode(save_bucket.encode()).decode()
        encoded_object = base64.urlsafe_b64encode(save_object.encode()).decode()
        print(f"[INFO] Processing {bucket}/{key} -> {save_bucket}/{save_object}")
        try:
            output = client.get_object(
                bucket=bucket,
                key=key,
                process=process_value,
                save_bucket=encoded_bucket,
                save_object=encoded_object,
            )
            raw = output.read()
        except TosServerError as e:
            print(
                f"[ERROR] TOS server error: code={e.code}, status={e.status_code}, "
                f"request_id={e.request_id}, message={e.message}",
                file=sys.stderr,
            )
            sys.exit(1)
        except TosClientError as e:
            print(f"[ERROR] TOS client error: {e}", file=sys.stderr)
            sys.exit(1)

        print("[OK] Save result:")
        if not maybe_print_json(raw):
            print(raw.decode("utf-8", errors="replace"))
        return

    if not args.output:
        print(
            "[ERROR] --output is required when not saving back to TOS.", file=sys.stderr
        )
        sys.exit(1)

    print(f"[INFO] Processing {bucket}/{key} -> {args.output}")
    try:
        client.get_object_to_file(
            bucket=bucket,
            key=key,
            file_path=args.output,
            process=process_value,
        )
    except TosServerError as e:
        print(
            f"[ERROR] TOS server error: code={e.code}, status={e.status_code}, "
            f"request_id={e.request_id}, message={e.message}",
            file=sys.stderr,
        )
        sys.exit(1)
    except TosClientError as e:
        print(f"[ERROR] TOS client error: {e}", file=sys.stderr)
        sys.exit(1)

    size = os.path.getsize(args.output)
    print(f"[OK] Output saved to {args.output} ({size} bytes)")


if __name__ == "__main__":
    main()

# Copyright (c) 2025 Beijing Volcano Engine Technology Co., Ltd. and/or its affiliates.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

#!/usr/bin/env python3
"""Example script: convert image format using TOS image processing.

Builds `process="image/format,..."` and either:
  - saves the processed image locally via `get_object_to_file` (default), or
  - saves it back to TOS via `get_object(..., save_bucket=..., save_object=...)`.

Common parameters:
  - f: output format (jpg/png/webp)
  - q: output quality (integer, range subject to official documentation)

The current service behavior used by this script expects the target format as a
plain segment, for example `image/format,webp,q_80`.

For any additional parameters, pass `--kv key=value` and the script will append it
as `key_value` in the process string.

Environment variables:
  - TOS_ACCESS_KEY, TOS_SECRET_KEY, TOS_SECURITY_TOKEN(optional)
  - TOS_ENDPOINT, TOS_REGION
  - TOS_BUCKET, TOS_OBJECT_KEY
Note: Parameter semantics are subject to the official TOS documentation.
"""

import argparse
import base64
import json
import os
import sys
from typing import Optional

import tos
from tos.exceptions import TosClientError, TosServerError


def get_env(name: str, required: bool = True, default: Optional[str] = None) -> str:
    value = os.getenv(name, default)
    if required and not value:
        print(f"[ERROR] Environment variable {name} is required.", file=sys.stderr)
        sys.exit(1)
    return value  # type: ignore[return-value]


def create_client() -> tos.TosClientV2:
    ak = get_env("TOS_ACCESS_KEY")
    sk = get_env("TOS_SECRET_KEY")
    endpoint = get_env("TOS_ENDPOINT")
    region = get_env("TOS_REGION")
    security_token = os.getenv("TOS_SECURITY_TOKEN")

    print(
        f"[INFO] Initializing TOS client for endpoint={endpoint}, region={region} ..."
    )
    return tos.TosClientV2(
        ak=ak,
        sk=sk,
        endpoint=endpoint,
        region=region,
        security_token=security_token,
    )


def parse_kv_list(items: list[str]) -> list[tuple[str, str]]:
    pairs: list[tuple[str, str]] = []
    for item in items:
        if "=" not in item:
            raise ValueError(f"Invalid --kv '{item}', expected key=value")
        k, v = item.split("=", 1)
        k = k.strip()
        v = v.strip()
        if not k:
            raise ValueError(f"Invalid --kv '{item}', key is empty")
        pairs.append((k, v))
    return pairs


def build_process(op: str, pairs: list[tuple[str, str]]) -> str:
    base = f"image/{op}"
    if not pairs:
        return base
    if op == "format":
        rendered: list[str] = []
        for k, v in pairs:
            if k == "f":
                # The current service accepts the target format as a plain segment:
                # image/format,png
                rendered.append(v)
            else:
                rendered.append(f"{k}_{v}")
        return base + "," + ",".join(rendered)
    return base + "," + ",".join([f"{k}_{v}" for k, v in pairs])


def default_output_path(key: str, fmt: str) -> str:
    base = os.path.basename(key)
    name, _dot, _ext = base.partition(".")
    if not name:
        name = "output"
    return f"{name}.{fmt}"


def main() -> None:
    parser = argparse.ArgumentParser(
        description="Convert image format via TOS process=image/format"
    )
    parser.add_argument("--bucket", type=str, default=None, help="Override TOS_BUCKET")
    parser.add_argument("--key", type=str, default=None, help="Override TOS_OBJECT_KEY")
    parser.add_argument(
        "--f",
        dest="fmt",
        choices=["jpg", "png", "webp"],
        required=True,
        help="Target format",
    )
    parser.add_argument(
        "--q", dest="quality", type=int, default=None, help="Output quality"
    )
    parser.add_argument(
        "--kv", action="append", default=[], help="Extra process option: key=value"
    )
    parser.add_argument("--output", type=str, default=None, help="Local output file")
    parser.add_argument(
        "--saveas-bucket", type=str, default=None, help="Save result to this bucket"
    )
    parser.add_argument(
        "--saveas-object", type=str, default=None, help="Save result as this object key"
    )
    parser.add_argument("--json", action="store_true", help="Print machine-readable JSON only")
    parser.add_argument("--dry-run", action="store_true", help="Print resolved request and exit")
    args = parser.parse_args()

    client = create_client()
    bucket = args.bucket or get_env("TOS_BUCKET")
    key = args.key or get_env("TOS_OBJECT_KEY")

    pairs: list[tuple[str, str]] = [("f", args.fmt)]
    if args.quality is not None:
        pairs.append(("q", str(args.quality)))

    try:
        pairs.extend(parse_kv_list(args.kv))
    except ValueError as e:
        print(f"[ERROR] {e}", file=sys.stderr)
        sys.exit(1)

    process_value = build_process("format", pairs)

    save_bucket = args.saveas_bucket
    save_object = args.saveas_object
    persist_to_tos = bool(save_bucket or save_object)

    if persist_to_tos:
        save_bucket = save_bucket or bucket
        if not save_object:
            save_object = f"format_{os.path.basename(key)}.{args.fmt}"

        print(f"[INFO] Converting {bucket}/{key} -> {save_bucket}/{save_object}")
        print(f"[INFO] process = {process_value}")

        encoded_bucket = base64.urlsafe_b64encode(save_bucket.encode()).decode()
        encoded_object = base64.urlsafe_b64encode(save_object.encode()).decode()

        try:
            output = client.get_object(
                bucket=bucket,
                key=key,
                process=process_value,
                save_bucket=encoded_bucket,
                save_object=encoded_object,
            )
            raw = output.read()
        except TosServerError as e:
            print(
                f"[ERROR] TOS server error: code={e.code}, status={e.status_code}, "
                f"request_id={e.request_id}, message={e.message}",
                file=sys.stderr,
            )
            sys.exit(1)
        except TosClientError as e:
            print(f"[ERROR] TOS client error: {e}", file=sys.stderr)
            sys.exit(1)

        try:
            data = json.loads(raw.decode("utf-8"))
        except Exception as exc:  # noqa: BLE001
            print("[ERROR] Failed to parse save result as JSON:", file=sys.stderr)
            print(exc, file=sys.stderr)
            print(raw[:200], file=sys.stderr)
            sys.exit(1)

        print("[OK] Image saved to TOS:")
        print(json.dumps(data, indent=2, ensure_ascii=False))
        return

    output_path = args.output or default_output_path(key, args.fmt)
    print(f"[INFO] Converting {bucket}/{key} -> {output_path}")
    print(f"[INFO] process = {process_value}")

    try:
        client.get_object_to_file(
            bucket=bucket, key=key, file_path=output_path, process=process_value
        )
    except TosServerError as e:
        print(
            f"[ERROR] TOS server error: code={e.code}, status={e.status_code}, "
            f"request_id={e.request_id}, message={e.message}",
            file=sys.stderr,
        )
        sys.exit(1)
    except TosClientError as e:
        print(f"[ERROR] TOS client error: {e}", file=sys.stderr)
        sys.exit(1)

    size = os.path.getsize(output_path)
    print(f"[OK] Image saved to {output_path} ({size} bytes)")


if __name__ == "__main__":
    main()

# Copyright (c) 2025 Beijing Volcano Engine Technology Co., Ltd. and/or its affiliates.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

#!/usr/bin/env python3
"""Example script: get image information from TOS using the Python SDK.

Calls TOS image processing with `process="image/info"` and prints metadata.
If the service returns JSON, the script prints that JSON. If the service returns
raw image bytes instead, the script falls back to local parsing for basic info.

Environment variables:
  - TOS_ACCESS_KEY        Access key ID (AK) or STS AccessKeyId
  - TOS_SECRET_KEY        Secret access key (SK) or STS SecretAccessKey
  - TOS_SECURITY_TOKEN    (optional) STS session token
  - TOS_ENDPOINT          TOS endpoint, e.g. https://tos-cn-beijing.volces.com
  - TOS_REGION            TOS region, e.g. cn-beijing
  - TOS_BUCKET            Bucket name that stores the image
  - TOS_OBJECT_KEY        Object key of the image file in the bucket

This script supports:
  - local save: saves the response body locally when `--output` is provided
  - save back to TOS: via `get_object(..., save_bucket=..., save_object=...)`

Note: The exact response schema is subject to the official TOS documentation.
"""

import argparse
import json
import os
import sys
from pathlib import Path
from typing import Any
from typing import Optional

import tos
from tos.exceptions import TosClientError, TosServerError


def get_env(name: str, required: bool = True, default: Optional[str] = None) -> str:
    value = os.getenv(name, default)
    if required and not value:
        print(f"[ERROR] Environment variable {name} is required.", file=sys.stderr)
        sys.exit(1)
    return value  # type: ignore[return-value]


def create_client() -> tos.TosClientV2:
    ak = get_env("TOS_ACCESS_KEY")
    sk = get_env("TOS_SECRET_KEY")
    endpoint = get_env("TOS_ENDPOINT")
    region = get_env("TOS_REGION")
    security_token = os.getenv("TOS_SECURITY_TOKEN")

    print(
        f"[INFO] Initializing TOS client for endpoint={endpoint}, region={region} ..."
    )
    return tos.TosClientV2(
        ak=ak,
        sk=sk,
        endpoint=endpoint,
        region=region,
        security_token=security_token,
    )


def load_json_file(path: str) -> object:
    with open(path, "rb") as f:
        raw = f.read()
    return json.loads(raw.decode("utf-8"))


def _is_likely_json(raw: bytes) -> bool:
    s = raw.lstrip()
    return s.startswith(b"{") or s.startswith(b"[")


def _sniff_image_kind(raw: bytes) -> Optional[str]:
    if raw.startswith(b"\xff\xd8\xff"):
        return "jpeg"
    if raw.startswith(b"\x89PNG\r\n\x1a\n"):
        return "png"
    if raw.startswith(b"GIF87a") or raw.startswith(b"GIF89a"):
        return "gif"
    if raw.startswith(b"RIFF") and raw[8:12] == b"WEBP":
        return "webp"
    return None


def _parse_dimensions(raw: bytes) -> tuple[Optional[int], Optional[int]]:
    kind = _sniff_image_kind(raw)
    if kind == "png" and len(raw) >= 24:
        # IHDR chunk: width/height big-endian at offset 16.
        w = int.from_bytes(raw[16:20], "big")
        h = int.from_bytes(raw[20:24], "big")
        return w, h
    if kind == "gif" and len(raw) >= 10:
        # Logical Screen Width/Height little-endian at offset 6.
        w = int.from_bytes(raw[6:8], "little")
        h = int.from_bytes(raw[8:10], "little")
        return w, h
    if kind == "jpeg":
        # Scan for SOF marker (baseline/progressive) to read width/height.
        i = 2
        n = len(raw)
        while i + 1 < n:
            if raw[i] != 0xFF:
                i += 1
                continue
            # Skip padding FFs.
            while i < n and raw[i] == 0xFF:
                i += 1
            if i >= n:
                break
            marker = raw[i]
            i += 1
            # Standalone markers.
            if marker in (0xD8, 0xD9):
                continue
            if i + 1 >= n:
                break
            seg_len = int.from_bytes(raw[i : i + 2], "big")
            if seg_len < 2 or i + seg_len > n:
                break
            # SOF0/1/2/3/5/6/7/9/A/B/C/D/E/F
            if marker in (
                0xC0,
                0xC1,
                0xC2,
                0xC3,
                0xC5,
                0xC6,
                0xC7,
                0xC9,
                0xCA,
                0xCB,
                0xCD,
                0xCE,
                0xCF,
            ):
                # segment layout: [len(2)] [precision(1)] [height(2)] [width(2)] ...
                if i + 7 <= n:
                    h = int.from_bytes(raw[i + 3 : i + 5], "big")
                    w = int.from_bytes(raw[i + 5 : i + 7], "big")
                    return w, h
                break
            i += seg_len
        return None, None
    # WebP parsing is chunk-type dependent; keep it unknown for now.
    return None, None


def _fallback_local_info(raw: bytes) -> dict[str, Any]:
    kind = _sniff_image_kind(raw) or "unknown"
    w, h = _parse_dimensions(raw)
    return {
        "source": "fallback-local-parse",
        "format": kind,
        "bytes": len(raw),
        "width": w,
        "height": h,
        "note": "TOS image/info did not return JSON; computed basic info from response bytes.",
    }


def main() -> None:
    parser = argparse.ArgumentParser(
        description="Get image info via TOS process=image/info"
    )
    parser.add_argument("--bucket", type=str, default=None, help="Override TOS_BUCKET")
    parser.add_argument("--key", type=str, default=None, help="Override TOS_OBJECT_KEY")
    parser.add_argument(
        "--output",
        type=str,
        default=None,
        help="If set, save the response body locally using get_object_to_file",
    )
    parser.add_argument(
        "--saveas-bucket", type=str, default=None, help="Persist result to this bucket"
    )
    parser.add_argument(
        "--saveas-object",
        type=str,
        default=None,
        help="Persist result as this object key",
    )
    parser.add_argument("--json", action="store_true", help="Print machine-readable JSON only")
    parser.add_argument("--dry-run", action="store_true", help="Print resolved request and exit")
    args = parser.parse_args()

    client = create_client()
    bucket = args.bucket or get_env("TOS_BUCKET")
    key = args.key or get_env("TOS_OBJECT_KEY")

    save_bucket = args.saveas_bucket
    save_object = args.saveas_object
    persist_to_tos = bool(save_bucket or save_object)

    if persist_to_tos:
        save_bucket = save_bucket or bucket
        if not save_object:
            base = os.path.basename(key).replace("/", "_")
            save_object = f"image_info_{base}.json"

        print(
            f"[INFO] Requesting image info for {bucket}/{key} -> {save_bucket}/{save_object}"
        )
        print("[INFO] process = image/info")

        try:
            output = client.get_object(
                bucket=bucket,
                key=key,
                process="image/info",
                save_bucket=save_bucket,
                save_object=save_object,
            )
            raw = output.read()
        except TosServerError as e:
            print(
                f"[ERROR] TOS server error: code={e.code}, status={e.status_code}, "
                f"request_id={e.request_id}, message={e.message}",
                file=sys.stderr,
            )
            sys.exit(1)
        except TosClientError as e:
            print(f"[ERROR] TOS client error: {e}", file=sys.stderr)
            sys.exit(1)

        try:
            data = json.loads(raw.decode("utf-8"))
        except Exception as exc:  # noqa: BLE001
            print("[ERROR] Failed to parse response as JSON:", file=sys.stderr)
            print(exc, file=sys.stderr)
            print(raw[:200], file=sys.stderr)
            sys.exit(1)

        print("[OK] Image info saved to TOS:")
        print(json.dumps(data, indent=2, ensure_ascii=False))
        return

    if args.output:
        output_path = args.output
        print(f"[INFO] Requesting image info for {bucket}/{key} -> {output_path}")
        print("[INFO] process = image/info")

        try:
            client.get_object_to_file(
                bucket=bucket, key=key, file_path=output_path, process="image/info"
            )
        except TosServerError as e:
            print(
                f"[ERROR] TOS server error: code={e.code}, status={e.status_code}, "
                f"request_id={e.request_id}, message={e.message}",
                file=sys.stderr,
            )
            sys.exit(1)
        except TosClientError as e:
            print(f"[ERROR] TOS client error: {e}", file=sys.stderr)
            sys.exit(1)

        raw = Path(output_path).read_bytes()
        if _is_likely_json(raw):
            try:
                data = json.loads(raw.decode("utf-8"))
            except Exception as exc:  # noqa: BLE001
                print("[ERROR] Failed to parse local file as JSON:", file=sys.stderr)
                print(exc, file=sys.stderr)
                sys.exit(1)
        else:
            data = _fallback_local_info(raw)

        print("[OK] Image info:")
        print(json.dumps(data, indent=2, ensure_ascii=False))
        return

    print(f"[INFO] Requesting image info for {bucket}/{key} ...")
    print("[INFO] process = image/info")

    try:
        output = client.get_object(bucket=bucket, key=key, process="image/info")
        raw = output.read()
    except TosServerError as e:
        print(
            f"[ERROR] TOS server error: code={e.code}, status={e.status_code}, "
            f"request_id={e.request_id}, message={e.message}",
            file=sys.stderr,
        )
        sys.exit(1)
    except TosClientError as e:
        print(f"[ERROR] TOS client error: {e}", file=sys.stderr)
        sys.exit(1)

    if _is_likely_json(raw):
        try:
            data = json.loads(raw.decode("utf-8"))
        except Exception as exc:  # noqa: BLE001
            print("[ERROR] Failed to parse response as JSON:", file=sys.stderr)
            print(exc, file=sys.stderr)
            print(raw[:200], file=sys.stderr)
            sys.exit(1)
    else:
        data = _fallback_local_info(raw)

    print("[OK] Image info:")
    print(json.dumps(data, indent=2, ensure_ascii=False))


if __name__ == "__main__":
    main()

# Copyright (c) 2025 Beijing Volcano Engine Technology Co., Ltd. and/or its affiliates.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

#!/usr/bin/env python3
"""Generic image process entrypoint for TOS image processing.

Accepts a full process string (e.g. "image/resize,w_100,h_100"), then either:
  - saves the processed output locally via `get_object_to_file` (default), or
  - saves it back to TOS via `get_object(..., save_bucket=..., save_object=...)`.

Environment variables:
  - TOS_ACCESS_KEY, TOS_SECRET_KEY, TOS_SECURITY_TOKEN(optional)
  - TOS_ENDPOINT, TOS_REGION
  - TOS_BUCKET, TOS_OBJECT_KEY
Note: The process syntax and option keys are subject to the official TOS documentation.
"""

import argparse
import base64
import json
import os
import sys
from typing import Optional

import tos
from tos.exceptions import TosClientError, TosServerError


def get_env(name: str, required: bool = True, default: Optional[str] = None) -> str:
    value = os.getenv(name, default)
    if required and not value:
        print(f"[ERROR] Environment variable {name} is required.", file=sys.stderr)
        sys.exit(1)
    return value  # type: ignore[return-value]


def create_client() -> tos.TosClientV2:
    ak = get_env("TOS_ACCESS_KEY")
    sk = get_env("TOS_SECRET_KEY")
    endpoint = get_env("TOS_ENDPOINT")
    region = get_env("TOS_REGION")
    security_token = os.getenv("TOS_SECURITY_TOKEN")

    print(
        f"[INFO] Initializing TOS client for endpoint={endpoint}, region={region} ..."
    )
    return tos.TosClientV2(
        ak=ak,
        sk=sk,
        endpoint=endpoint,
        region=region,
        security_token=security_token,
    )


def maybe_print_json(raw: bytes) -> bool:
    try:
        text = raw.decode("utf-8")
        data = json.loads(text)
        print(json.dumps(data, indent=2, ensure_ascii=False))
        return True
    except Exception:
        return False


def main() -> None:
    parser = argparse.ArgumentParser(description="Generic TOS image process entrypoint")
    parser.add_argument("--bucket", type=str, default=None, help="Override TOS_BUCKET")
    parser.add_argument("--key", type=str, default=None, help="Override TOS_OBJECT_KEY")
    parser.add_argument(
        "--process",
        type=str,
        required=True,
        help="Full process string, e.g. image/info",
    )
    parser.add_argument(
        "--output",
        type=str,
        default=None,
        help="Local output file (required if not saving to TOS)",
    )
    parser.add_argument(
        "--saveas-bucket", type=str, default=None, help="Save result to this bucket"
    )
    parser.add_argument(
        "--saveas-object", type=str, default=None, help="Save result as this object key"
    )
    parser.add_argument("--json", action="store_true", help="Print machine-readable JSON only")
    parser.add_argument("--dry-run", action="store_true", help="Print resolved request and exit")
    args = parser.parse_args()

    client = create_client()
    bucket = args.bucket or get_env("TOS_BUCKET")
    key = args.key or get_env("TOS_OBJECT_KEY")

    save_bucket = args.saveas_bucket
    save_object = args.saveas_object
    persist_to_tos = bool(save_bucket or save_object)

    if persist_to_tos:
        save_bucket = save_bucket or bucket
        if not save_object:
            save_object = f"processed_{os.path.basename(key)}"

        print(f"[INFO] Processing {bucket}/{key} -> {save_bucket}/{save_object}")
        print(f"[INFO] process = {args.process}")

        encoded_bucket = base64.urlsafe_b64encode(save_bucket.encode()).decode()
        encoded_object = base64.urlsafe_b64encode(save_object.encode()).decode()

        try:
            output = client.get_object(
                bucket=bucket,
                key=key,
                process=args.process,
                save_bucket=encoded_bucket,
                save_object=encoded_object,
            )
            raw = output.read()
        except TosServerError as e:
            print(
                f"[ERROR] TOS server error: code={e.code}, status={e.status_code}, "
                f"request_id={e.request_id}, message={e.message}",
                file=sys.stderr,
            )
            sys.exit(1)
        except TosClientError as e:
            print(f"[ERROR] TOS client error: {e}", file=sys.stderr)
            sys.exit(1)

        print("[OK] Save result:")
        if not maybe_print_json(raw):
            print(raw.decode("utf-8", errors="replace"))
        return

    output_path = args.output
    if not output_path:
        print(
            "[ERROR] --output is required when not saving back to TOS.", file=sys.stderr
        )
        sys.exit(1)

    print(f"[INFO] Processing {bucket}/{key} -> {output_path}")
    print(f"[INFO] process = {args.process}")

    try:
        client.get_object_to_file(
            bucket=bucket, key=key, file_path=output_path, process=args.process
        )
    except TosServerError as e:
        print(
            f"[ERROR] TOS server error: code={e.code}, status={e.status_code}, "
            f"request_id={e.request_id}, message={e.message}",
            file=sys.stderr,
        )
        sys.exit(1)
    except TosClientError as e:
        print(f"[ERROR] TOS client error: {e}", file=sys.stderr)
        sys.exit(1)

    size = os.path.getsize(output_path)
    print(f"[OK] Output saved to {output_path} ({size} bytes)")


if __name__ == "__main__":
    main()

# Copyright (c) 2025 Beijing Volcano Engine Technology Co., Ltd. and/or its affiliates.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

#!/usr/bin/env python3
"""Example script: resize image using TOS image processing.

Builds `process="image/resize,..."` and either:
  - saves the processed image locally via `get_object_to_file` (default), or
  - saves it back to TOS via `get_object(..., save_bucket=..., save_object=...)`.

Common parameters:
  - w: target width
  - h: target height
  - m: resize mode (string; exact options are subject to official documentation)

For any additional parameters, pass `--kv key=value` and the script will append it
as `key_value` in the process string.

Environment variables:
  - TOS_ACCESS_KEY, TOS_SECRET_KEY, TOS_SECURITY_TOKEN(optional)
  - TOS_ENDPOINT, TOS_REGION
  - TOS_BUCKET, TOS_OBJECT_KEY
Note: Parameter semantics are subject to the official TOS documentation.
"""

import argparse
import base64
import json
import os
import sys
from typing import Optional

import tos
from tos.exceptions import TosClientError, TosServerError


def get_env(name: str, required: bool = True, default: Optional[str] = None) -> str:
    value = os.getenv(name, default)
    if required and not value:
        print(f"[ERROR] Environment variable {name} is required.", file=sys.stderr)
        sys.exit(1)
    return value  # type: ignore[return-value]


def create_client() -> tos.TosClientV2:
    ak = get_env("TOS_ACCESS_KEY")
    sk = get_env("TOS_SECRET_KEY")
    endpoint = get_env("TOS_ENDPOINT")
    region = get_env("TOS_REGION")
    security_token = os.getenv("TOS_SECURITY_TOKEN")

    print(
        f"[INFO] Initializing TOS client for endpoint={endpoint}, region={region} ..."
    )
    return tos.TosClientV2(
        ak=ak,
        sk=sk,
        endpoint=endpoint,
        region=region,
        security_token=security_token,
    )


def parse_kv_list(items: list[str]) -> list[tuple[str, str]]:
    pairs: list[tuple[str, str]] = []
    for item in items:
        if "=" not in item:
            raise ValueError(f"Invalid --kv '{item}', expected key=value")
        k, v = item.split("=", 1)
        k = k.strip()
        v = v.strip()
        if not k:
            raise ValueError(f"Invalid --kv '{item}', key is empty")
        pairs.append((k, v))
    return pairs


def build_process(op: str, pairs: list[tuple[str, str]]) -> str:
    base = f"image/{op}"
    if not pairs:
        return base
    return base + "," + ",".join([f"{k}_{v}" for k, v in pairs])


def default_output_path(key: str) -> str:
    base = os.path.basename(key)
    if not base:
        return "resized_output"
    return f"resized_{base}"


def main() -> None:
    parser = argparse.ArgumentParser(
        description="Resize image via TOS process=image/resize"
    )
    parser.add_argument("--bucket", type=str, default=None, help="Override TOS_BUCKET")
    parser.add_argument("--key", type=str, default=None, help="Override TOS_OBJECT_KEY")
    parser.add_argument(
        "--w", dest="width", type=int, default=None, help="Target width"
    )
    parser.add_argument(
        "--h", dest="height", type=int, default=None, help="Target height"
    )
    parser.add_argument("--m", dest="mode", type=str, default=None, help="Resize mode")
    parser.add_argument(
        "--kv", action="append", default=[], help="Extra process option: key=value"
    )
    parser.add_argument("--output", type=str, default=None, help="Local output file")
    parser.add_argument(
        "--saveas-bucket", type=str, default=None, help="Save result to this bucket"
    )
    parser.add_argument(
        "--saveas-object", type=str, default=None, help="Save result as this object key"
    )
    parser.add_argument("--json", action="store_true", help="Print machine-readable JSON only")
    parser.add_argument("--dry-run", action="store_true", help="Print resolved request and exit")
    args = parser.parse_args()

    client = create_client()
    bucket = args.bucket or get_env("TOS_BUCKET")
    key = args.key or get_env("TOS_OBJECT_KEY")

    pairs: list[tuple[str, str]] = []
    if args.width is not None:
        pairs.append(("w", str(args.width)))
    if args.height is not None:
        pairs.append(("h", str(args.height)))
    if args.mode:
        pairs.append(("m", args.mode))

    try:
        pairs.extend(parse_kv_list(args.kv))
    except ValueError as e:
        print(f"[ERROR] {e}", file=sys.stderr)
        sys.exit(1)

    process_value = build_process("resize", pairs)

    save_bucket = args.saveas_bucket
    save_object = args.saveas_object
    persist_to_tos = bool(save_bucket or save_object)

    if persist_to_tos:
        save_bucket = save_bucket or bucket
        if not save_object:
            save_object = f"resized_{os.path.basename(key)}"

        print(f"[INFO] Resizing {bucket}/{key} -> {save_bucket}/{save_object}")
        print(f"[INFO] process = {process_value}")

        encoded_bucket = base64.urlsafe_b64encode(save_bucket.encode()).decode()
        encoded_object = base64.urlsafe_b64encode(save_object.encode()).decode()

        try:
            output = client.get_object(
                bucket=bucket,
                key=key,
                process=process_value,
                save_bucket=encoded_bucket,
                save_object=encoded_object,
            )
            raw = output.read()
        except TosServerError as e:
            print(
                f"[ERROR] TOS server error: code={e.code}, status={e.status_code}, "
                f"request_id={e.request_id}, message={e.message}",
                file=sys.stderr,
            )
            sys.exit(1)
        except TosClientError as e:
            print(f"[ERROR] TOS client error: {e}", file=sys.stderr)
            sys.exit(1)

        try:
            data = json.loads(raw.decode("utf-8"))
        except Exception as exc:  # noqa: BLE001
            print("[ERROR] Failed to parse save result as JSON:", file=sys.stderr)
            print(exc, file=sys.stderr)
            print(raw[:200], file=sys.stderr)
            sys.exit(1)

        print("[OK] Image saved to TOS:")
        print(json.dumps(data, indent=2, ensure_ascii=False))
        return

    output_path = args.output or default_output_path(key)
    print(f"[INFO] Resizing {bucket}/{key} -> {output_path}")
    print(f"[INFO] process = {process_value}")

    try:
        client.get_object_to_file(
            bucket=bucket, key=key, file_path=output_path, process=process_value
        )
    except TosServerError as e:
        print(
            f"[ERROR] TOS server error: code={e.code}, status={e.status_code}, "
            f"request_id={e.request_id}, message={e.message}",
            file=sys.stderr,
        )
        sys.exit(1)
    except TosClientError as e:
        print(f"[ERROR] TOS client error: {e}", file=sys.stderr)
        sys.exit(1)

    size = os.path.getsize(output_path)
    print(f"[OK] Image saved to {output_path} ({size} bytes)")


if __name__ == "__main__":
    main()