Byted Airesearch Videoeval

                                 Apache License
                           Version 2.0, January 2004
                        http://www.apache.org/licenses/

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# 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.

"""Shared helpers for the byted-airesearch-videoeval skill."""

from __future__ import annotations

import json
import os
import sys
import uuid
from typing import Any, Optional

import requests

BASE_URL_ENV = "BYTED_AIRESEARCH_VIDEOEVAL_BASE_URL"
BASE_URL = os.getenv(BASE_URL_ENV, "https://console.volcengine.com").rstrip("/")
UPLOAD_PATH = "/datatester/compass/api/v3/survey/attachment"
CREATE_TASK_PATH = "/datatester/compass/api/v3/survey/task"
API_KEY_ENV = "BYTED_AIRESEARCH_VIDEOEVAL_API_KEY"
DEFAULT_TIMEOUT = 60.0
PRODUCT_VERSION_HEADER = "x-product-version"
PRODUCT_VERSION_VALUE = "20"


def build_request_id() -> str:
    return str(uuid.uuid4())


def success(message: str, data: Any, request_id: Optional[str] = None) -> dict[str, Any]:
    return {
        "status": "success",
        "message": message,
        "request_id": request_id or build_request_id(),
        "data": data,
        "error": None,
    }


def failure(
    message: str,
    code: str,
    details: Any = None,
    request_id: Optional[str] = None,
) -> dict[str, Any]:
    return {
        "status": "error",
        "message": message,
        "request_id": request_id or build_request_id(),
        "data": None,
        "error": {"code": code, "details": details},
    }


def print_json(payload: dict[str, Any]) -> None:
    print(json.dumps(payload, ensure_ascii=False, indent=2))


def resolve_api_key(api_key: Optional[str]) -> str:
    resolved = (api_key or os.getenv(API_KEY_ENV, "")).strip()
    if resolved:
        return resolved

    raise PermissionError(
        "An API key is required. Provide --api-key or set "
        f"{API_KEY_ENV}. If you do not have one yet, create or view an API key at "
        "https://console.volcengine.com/datatester/ai-research/audience/list?tab=apikey first."
    )


def build_headers(api_key: Optional[str] = None) -> dict[str, str]:
    headers: dict[str, str] = {
        "Accept": "application/json",
        "User-Agent": "byted-airesearch-videoeval/0.1",
        PRODUCT_VERSION_HEADER: PRODUCT_VERSION_VALUE,
    }

    resolved_api_key = resolve_api_key(api_key)
    headers["Authorization"] = f"bearer {resolved_api_key}"

    return headers


def build_url(path: str) -> str:
    if path.startswith("http://") or path.startswith("https://"):
        return path
    return f"{BASE_URL}{path}"


def create_session(api_key: Optional[str] = None) -> requests.Session:
    session = requests.Session()
    session.headers.update(build_headers(api_key))
    return session


def parse_json_response(response: requests.Response) -> Any:
    try:
        return response.json()
    except ValueError as exc:
        raise ValueError(
            f"Response is not valid JSON. status={response.status_code}, body={response.text[:1000]}"
        ) from exc


def extract_business_error(payload: Any) -> tuple[Optional[str], Optional[str]]:
    if not isinstance(payload, dict):
        return None, None

    code = payload.get("code")
    message = payload.get("message")
    if not isinstance(message, str) or not message.strip():
        return None, None

    if isinstance(code, int):
        if code != 0:
            return str(code), message
        return None, None

    if isinstance(code, str):
        normalized = code.strip()
        if not normalized or normalized in {"0", "success", "ok", "OK", "SUCCESS"}:
            return None, None
        return normalized, message

    return None, None


def is_quota_exceeded_message(message: Optional[str]) -> bool:
    if not message:
        return False

    normalized = message.lower()
    return "free usage limit" in normalized or "24 hours" in normalized


def format_quota_exceeded_message(message: str) -> str:
    return (
        "免费版用户每24小时最多提交10个评估视频，如需购买请联系火山引擎销售人员。 "
        f"Service message: {message}"
    )


def unwrap_payload(payload: Any) -> Any:
    if isinstance(payload, dict):
        for key in ("data", "result", "payload"):
            value = payload.get(key)
            if value is not None:
                return value
    return payload


def exit_with_payload(payload: dict[str, Any], status_code: int = 0) -> None:
    print_json(payload)
    raise SystemExit(status_code)


def not_implemented_payload(operation: str) -> dict[str, Any]:
    return failure(
        message=f"{operation} API is not wired yet.",
        code="NOT_IMPLEMENTED",
        details={
            "operation": operation,
            "base_url": BASE_URL,
            "note": "Update this script after the concrete API definition is provided.",
        },
    )


def normalize_attachment(payload: Any) -> tuple[Optional[str], Any]:
    candidate = unwrap_payload(payload)
    if isinstance(candidate, dict) and "id" in candidate:
        return str(candidate["id"]), candidate

    if isinstance(payload, dict):
        for key in ("attachment", "item"):
            value = payload.get(key)
            if isinstance(value, dict) and "id" in value:
                return str(value["id"]), value

    return None, candidate


def normalize_task(payload: Any) -> tuple[Optional[str], Optional[str], Any]:
    candidate = unwrap_payload(payload)
    if isinstance(candidate, dict):
        task_id = candidate.get("id")
        status = candidate.get("status")
        if task_id is not None:
            return str(task_id), None if status is None else str(status), candidate

    if isinstance(payload, dict):
        for key in ("task", "item"):
            value = payload.get(key)
            if isinstance(value, dict) and value.get("id") is not None:
                status = value.get("status")
                return str(value["id"]), None if status is None else str(status), value

    return None, None, candidate


def request_error_details(response: requests.Response, body: Any) -> dict[str, Any]:
    return {
        "status_code": response.status_code,
        "response": body,
    }


def ensure_requests_available() -> None:
    if requests is None:
        raise RuntimeError("requests is required")


def handle_top_level_exception(exc: Exception) -> None:
    payload = failure(
        message=str(exc),
        code=exc.__class__.__name__.upper(),
    )
    print_json(payload)
    raise SystemExit(1)


def validate_file_exists(path: str) -> str:
    if not path:
        raise ValueError("A file path is required.")
    if not os.path.exists(path):
        raise FileNotFoundError(f"File does not exist: {path}")
    if not os.path.isfile(path):
        raise ValueError(f"Path is not a file: {path}")
    return path


def load_binary_file(path: str) -> bytes:
    with open(path, "rb") as file_obj:
        return file_obj.read()


def stderr(message: str) -> None:
    print(message, file=sys.stderr)

# 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.

"""Create a long-running material evaluation task."""

from __future__ import annotations

import argparse
from typing import Any

from common import (
    CREATE_TASK_PATH,
    DEFAULT_TIMEOUT,
    build_request_id,
    build_url,
    create_session,
    extract_business_error,
    failure,
    format_quota_exceeded_message,
    handle_top_level_exception,
    is_quota_exceeded_message,
    normalize_task,
    parse_json_response,
    print_json,
    request_error_details,
    success,
)

FIXED_AGENT_ID = 125
FIXED_AUDIENCE_ID = 3664529
FIXED_FORM_ID = 0
VALID_LANGUAGES = ("auto", "zh", "en")
VALID_TYPICAL_USER_SELECTION_MODES = ("VIEWPOINT", "PROFILE")
MAX_ATTACHMENT_IDS = 10


def build_parser() -> argparse.ArgumentParser:
    parser = argparse.ArgumentParser(
        description="Create a material evaluation task."
    )
    parser.add_argument(
        "--attachment-id",
        action="append",
        required=True,
        help="Attachment ID returned by upload_video.py. Repeat to send multiple IDs.",
    )
    parser.add_argument("--prompt", help="Prompt text for task creation.")
    parser.add_argument(
        "--language",
        choices=VALID_LANGUAGES,
        help="Language preference for the evaluation task.",
    )
    parser.add_argument(
        "--enable-typical-user",
        action="store_true",
        help="Enable typical user simulation.",
    )
    parser.add_argument(
        "--typical-user-count",
        type=int,
        help="Typical user count when typical user simulation is enabled.",
    )
    parser.add_argument(
        "--typical-user-selection-mode",
        choices=VALID_TYPICAL_USER_SELECTION_MODES,
        help="Selection mode for typical user generation.",
    )
    parser.add_argument(
        "--enable-report",
        action="store_true",
        help="Enable report generation.",
    )
    parser.add_argument(
        "--api-key",
        help="API key used to build the Authorization header.",
    )
    parser.add_argument(
        "--timeout",
        type=float,
        default=DEFAULT_TIMEOUT,
        help=f"HTTP timeout in seconds. Default: {DEFAULT_TIMEOUT}.",
    )
    return parser


def build_request_body(args: argparse.Namespace) -> dict[str, Any]:
    attachment_ids = args.attachment_id
    if len(attachment_ids) > MAX_ATTACHMENT_IDS:
        raise ValueError(
            "Too many attachment IDs. "
            f"At most {MAX_ATTACHMENT_IDS} attachment_ids are allowed per task creation request, "
            f"got {len(attachment_ids)}."
        )

    body: dict[str, Any] = {
        "agent_id": FIXED_AGENT_ID,
        "audience_id": FIXED_AUDIENCE_ID,
        "form_id": FIXED_FORM_ID,
        "attachment_ids": attachment_ids,
    }

    if args.prompt:
        body["prompt"] = args.prompt
    if args.language:
        body["language"] = args.language
    if args.enable_typical_user:
        body["is_typical_user_enabled"] = True
    if args.typical_user_count is not None:
        if args.typical_user_count <= 0:
            raise ValueError("--typical-user-count must be greater than 0.")
        body["typical_user_count"] = args.typical_user_count
    if args.typical_user_selection_mode:
        body["typical_user_selection_mode"] = args.typical_user_selection_mode
    if args.enable_report:
        body["is_report_enabled"] = True

    return body


def create_task(body: dict[str, Any], api_key: str | None = None, timeout: float = DEFAULT_TIMEOUT) -> dict:
    request_id = build_request_id()
    session = create_session(api_key)
    response = session.post(build_url(CREATE_TASK_PATH), json=body, timeout=timeout)
    raw_body = parse_json_response(response)
    business_code, business_message = extract_business_error(raw_body)

    if response.status_code >= 400 or business_code is not None:
        message = "Task creation failed."
        if business_message:
            message = (
                format_quota_exceeded_message(business_message)
                if is_quota_exceeded_message(business_message)
                else f"Task creation failed. Service message: {business_message}"
            )
        return failure(
            message=message,
            code="CREATE_TASK_FAILED",
            details=request_error_details(response, raw_body),
            request_id=request_id,
        )

    task_id, task_status, task = normalize_task(raw_body)
    if not task_id:
        return failure(
            message="Task creation succeeded but no task ID could be extracted.",
            code="TASK_ID_MISSING",
            details={"response": raw_body},
            request_id=request_id,
        )

    return success(
        message="Evaluation task created successfully.",
        data={
            "task_id": task_id,
            "task_status": task_status,
            "follow_up_hint": (
                "This is a long-running task. Query task list or task detail later to check progress or fetch the result."
            ),
        },
        request_id=request_id,
    )


def main() -> None:
    parser = build_parser()
    args = parser.parse_args()
    body = build_request_body(args)
    payload = create_task(body=body, api_key=args.api_key, timeout=args.timeout)
    print_json(payload)


if __name__ == "__main__":
    try:
        main()
    except Exception as exc:
        handle_top_level_exception(exc)

# 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.

"""Get material evaluation task detail."""

from __future__ import annotations

import argparse
import json
from typing import Any

from common import (
    CREATE_TASK_PATH,
    DEFAULT_TIMEOUT,
    build_request_id,
    build_url,
    create_session,
    failure,
    handle_top_level_exception,
    normalize_task,
    parse_json_response,
    print_json,
    request_error_details,
    success,
)


def build_parser() -> argparse.ArgumentParser:
    parser = argparse.ArgumentParser(
        description="Get material evaluation task detail."
    )
    parser.add_argument("--task-id", required=True, help="Task identifier.")
    parser.add_argument(
        "--api-key",
        help="API key used to build the Authorization header.",
    )
    parser.add_argument(
        "--timeout",
        type=float,
        default=DEFAULT_TIMEOUT,
        help=f"HTTP timeout in seconds. Default: {DEFAULT_TIMEOUT}.",
    )
    return parser


def build_summary(task: dict) -> dict:
    return {
        "task_id": task.get("id"),
        "status": task.get("status"),
        "name": task.get("name"),
        "prompt": task.get("prompt"),
        "result": task.get("result"),
        "updated_at": task.get("updated_at"),
    }


def parse_detail(detail: Any) -> list[dict[str, Any]]:
    if detail in (None, ""):
        return []

    if isinstance(detail, list):
        parsed = detail
    elif isinstance(detail, str):
        parsed = json.loads(detail)
    else:
        raise ValueError("Task detail must be a JSON string or a list.")

    if not isinstance(parsed, list):
        raise ValueError("Parsed task detail is not a list.")

    return [item for item in parsed if isinstance(item, dict)]


def filter_summary_report_items(detail_items: list[dict[str, Any]]) -> list[dict[str, Any]]:
    return [
        item
        for item in detail_items
        if item.get("key") == "video_structured_result" and item.get("sub_tab") is not None
    ]


def get_task_detail(task_id: str, api_key: str | None = None, timeout: float = DEFAULT_TIMEOUT) -> dict:
    request_id = build_request_id()
    session = create_session(api_key)
    response = session.get(build_url(f"{CREATE_TASK_PATH}/{task_id}"), timeout=timeout)
    raw_body = parse_json_response(response)

    if response.status_code >= 400:
        return failure(
            message="Task detail request failed.",
            code="GET_TASK_DETAIL_FAILED",
            details=request_error_details(response, raw_body),
            request_id=request_id,
        )

    normalized_task_id, task_status, task = normalize_task(raw_body)
    if not normalized_task_id:
        return failure(
            message="Task detail request succeeded but no task ID could be extracted.",
            code="TASK_ID_MISSING",
            details={"response": raw_body},
            request_id=request_id,
        )

    if not isinstance(task, dict):
        return failure(
            message="Task detail response is not a task object.",
            code="INVALID_TASK_PAYLOAD",
            details={"response": raw_body},
            request_id=request_id,
        )

    detail_items = parse_detail(task.get("detail"))
    filtered_detail = filter_summary_report_items(detail_items)

    return success(
        message="Task detail fetched successfully.",
        data={
            "task_id": normalized_task_id,
            "task_status": task_status,
            "detail": filtered_detail,
            "filtered_detail_count": len(filtered_detail),
            "summary": build_summary(task),
        },
        request_id=request_id,
    )


def main() -> None:
    args = build_parser().parse_args()
    payload = get_task_detail(
        task_id=args.task_id,
        api_key=args.api_key,
        timeout=args.timeout,
    )
    print_json(payload)


if __name__ == "__main__":
    try:
        main()
    except Exception as exc:
        handle_top_level_exception(exc)

# 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.

"""List material evaluation tasks."""

from __future__ import annotations

import argparse

from common import (
    CREATE_TASK_PATH,
    DEFAULT_TIMEOUT,
    build_request_id,
    build_url,
    create_session,
    failure,
    handle_top_level_exception,
    parse_json_response,
    print_json,
    request_error_details,
    success,
)

FIXED_PAGE = 1
FIXED_PAGE_SIZE = 100
FIXED_AGENT_ID = 125


def build_parser() -> argparse.ArgumentParser:
    parser = argparse.ArgumentParser(
        description="List material evaluation tasks."
    )
    parser.add_argument(
        "--api-key",
        help="API key used to build the Authorization header.",
    )
    parser.add_argument(
        "--timeout",
        type=float,
        default=DEFAULT_TIMEOUT,
        help=f"HTTP timeout in seconds. Default: {DEFAULT_TIMEOUT}.",
    )
    return parser


def build_query_params() -> dict[str, int]:
    return {
        "page": FIXED_PAGE,
        "page_size": FIXED_PAGE_SIZE,
        "agent_id": FIXED_AGENT_ID,
    }


def normalize_list_payload(raw_body: object) -> tuple[list[dict], dict | None]:
    if not isinstance(raw_body, dict):
        raise ValueError("Task list response is not a JSON object.")

    payload = raw_body.get("data", raw_body)
    if not isinstance(payload, dict):
        raise ValueError("Task list payload is not a JSON object.")

    items = payload.get("list", [])
    page = payload.get("page")

    if not isinstance(items, list):
        raise ValueError("Task list field 'list' is not an array.")
    if page is not None and not isinstance(page, dict):
        raise ValueError("Task list field 'page' is not an object.")

    normalized_items = []
    for item in items:
        if not isinstance(item, dict):
            continue
        normalized_items.append(
            {
                "task_id": item.get("id"),
                "name": item.get("name"),
                "status": item.get("status"),
                "created_at": item.get("created_at"),
                "updated_at": item.get("updated_at"),
            }
        )

    return normalized_items, page


def list_tasks(api_key: str | None = None, timeout: float = DEFAULT_TIMEOUT) -> dict:
    request_id = build_request_id()
    session = create_session(api_key)
    response = session.get(
        build_url(CREATE_TASK_PATH),
        params=build_query_params(),
        timeout=timeout,
    )
    raw_body = parse_json_response(response)

    if response.status_code >= 400:
        return failure(
            message="Task list request failed.",
            code="LIST_TASKS_FAILED",
            details=request_error_details(response, raw_body),
            request_id=request_id,
        )

    items, page = normalize_list_payload(raw_body)
    return success(
        message="Task list fetched successfully.",
        data={
            "items": items,
            "page": page,
        },
        request_id=request_id,
    )


def main() -> None:
    args = build_parser().parse_args()
    payload = list_tasks(api_key=args.api_key, timeout=args.timeout)
    print_json(payload)


if __name__ == "__main__":
    try:
        main()
    except Exception as exc:
        handle_top_level_exception(exc)

# 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.

"""Upload one or more videos, then create a material evaluation task."""

from __future__ import annotations

import argparse

from common import handle_top_level_exception, print_json
from create_evaluation_task import MAX_ATTACHMENT_IDS, build_request_body, create_task
from upload_video import INTERNAL_USE_TOKEN, upload_video, validate_upload_constraints
from common import DEFAULT_TIMEOUT, validate_file_exists


def build_parser() -> argparse.ArgumentParser:
    parser = argparse.ArgumentParser(
        description="Upload one or more videos, then create a material evaluation task."
    )
    parser.add_argument(
        "--file",
        action="append",
        required=True,
        help="Local MP4 file path to upload. Repeat to submit multiple videos.",
    )
    parser.add_argument("--prompt", help="Prompt text for task creation.")
    parser.add_argument(
        "--language",
        choices=("auto", "zh", "en"),
        help="Language preference for the evaluation task.",
    )
    parser.add_argument(
        "--enable-typical-user",
        action="store_true",
        help="Enable typical user simulation.",
    )
    parser.add_argument(
        "--typical-user-count",
        type=int,
        help="Typical user count when typical user simulation is enabled.",
    )
    parser.add_argument(
        "--typical-user-selection-mode",
        choices=("VIEWPOINT", "PROFILE"),
        help="Selection mode for typical user generation.",
    )
    parser.add_argument(
        "--enable-report",
        action="store_true",
        help="Enable report generation.",
    )
    parser.add_argument(
        "--api-key",
        help="API key used to build the Authorization header.",
    )
    parser.add_argument(
        "--timeout",
        type=float,
        default=DEFAULT_TIMEOUT,
        help=f"HTTP timeout in seconds. Default: {DEFAULT_TIMEOUT}.",
    )
    return parser


def validate_batch(file_paths: list[str]) -> None:
    if len(file_paths) > MAX_ATTACHMENT_IDS:
        raise ValueError(
            "Too many videos. "
            f"At most {MAX_ATTACHMENT_IDS} videos are allowed per task submission, got {len(file_paths)}."
        )

    for file_path in file_paths:
        validate_file_exists(file_path)
        validate_upload_constraints(file_path)


def submit_task(args: argparse.Namespace) -> dict:
    validate_batch(args.file)

    attachment_ids: list[str] = []
    for file_path in args.file:
        upload_payload = upload_video(
            file_path=file_path,
            api_key=args.api_key,
            timeout=args.timeout,
            internal_use_only=INTERNAL_USE_TOKEN,
        )
        if upload_payload["status"] != "success":
            return upload_payload

        upload_data = upload_payload["data"]
        attachment_ids.append(upload_data["attachment_id"])

    body = build_request_body(
        argparse.Namespace(
            attachment_id=attachment_ids,
            prompt=args.prompt,
            language=args.language,
            enable_typical_user=args.enable_typical_user,
            typical_user_count=args.typical_user_count,
            typical_user_selection_mode=args.typical_user_selection_mode,
            enable_report=args.enable_report,
        )
    )
    task_payload = create_task(body=body, api_key=args.api_key, timeout=args.timeout)
    if task_payload["status"] != "success":
        return task_payload

    task_payload["data"]["submitted_video_count"] = len(attachment_ids)
    return task_payload


def main() -> None:
    args = build_parser().parse_args()
    payload = submit_task(args)
    print_json(payload)


if __name__ == "__main__":
    try:
        main()
    except Exception as exc:
        handle_top_level_exception(exc)

# 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.

"""Internal helper to upload a local video attachment for material evaluation."""

from __future__ import annotations

import argparse
import mimetypes
import os

from common import (
    CREATE_TASK_PATH,
    DEFAULT_TIMEOUT,
    UPLOAD_PATH,
    build_request_id,
    build_url,
    create_session,
    failure,
    handle_top_level_exception,
    normalize_attachment,
    parse_json_response,
    print_json,
    request_error_details,
    success,
    validate_file_exists,
)

MAX_FILE_SIZE_BYTES = 50 * 1024 * 1024
ALLOWED_EXTENSION = ".mp4"
ALLOWED_MIME_TYPE = "video/mp4"
INTERNAL_USE_TOKEN = "create-task-flow"


def build_parser() -> argparse.ArgumentParser:
    parser = argparse.ArgumentParser(
        description="Internal helper: upload a local video to the material evaluation attachment API."
    )
    parser.add_argument("--file", required=True, help="Local file path to upload.")
    parser.add_argument(
        "--internal-use-only",
        help="Internal marker required for create-task orchestration.",
    )
    parser.add_argument(
        "--api-key",
        help="API key used to build the Authorization header.",
    )
    parser.add_argument(
        "--timeout",
        type=float,
        default=DEFAULT_TIMEOUT,
        help=f"HTTP timeout in seconds. Default: {DEFAULT_TIMEOUT}.",
    )
    return parser


def validate_internal_usage(internal_use_only: str | None) -> None:
    if internal_use_only != INTERNAL_USE_TOKEN:
        raise PermissionError(
            "Direct upload is not allowed. "
            "The upload API can only be used inside the material evaluation task creation flow."
        )


def validate_upload_constraints(file_path: str) -> None:
    extension = os.path.splitext(file_path)[1].lower()
    if extension != ALLOWED_EXTENSION:
        raise ValueError(
            "Only MP4 videos are supported. "
            f"Expected a '{ALLOWED_EXTENSION}' file, got '{extension or 'no extension'}'."
        )

    mime_type, _ = mimetypes.guess_type(file_path)
    if mime_type != ALLOWED_MIME_TYPE:
        raise ValueError(
            "Invalid MIME type for upload. "
            f"Expected '{ALLOWED_MIME_TYPE}', got '{mime_type or 'unknown'}'."
        )

    file_size = os.path.getsize(file_path)
    if file_size > MAX_FILE_SIZE_BYTES:
        size_mb = file_size / (1024 * 1024)
        raise ValueError(
            "Video file is too large. "
            f"Each video must be 50MB or smaller, got {size_mb:.2f}MB."
        )


def upload_video(
    file_path: str,
    api_key: str | None = None,
    timeout: float = DEFAULT_TIMEOUT,
    internal_use_only: str | None = None,
) -> dict:
    validate_internal_usage(internal_use_only)
    validate_file_exists(file_path)
    validate_upload_constraints(file_path)
    request_id = build_request_id()
    session = create_session(api_key)
    url = build_url(UPLOAD_PATH)

    with open(file_path, "rb") as file_obj:
        files = {
            "file": (os.path.basename(file_path), file_obj, ALLOWED_MIME_TYPE)
        }
        response = session.post(url, files=files, timeout=timeout)

    body = parse_json_response(response)
    if response.status_code >= 400:
        return failure(
            message="Attachment upload failed.",
            code="UPLOAD_REQUEST_FAILED",
            details=request_error_details(response, body),
            request_id=request_id,
        )

    attachment_id, attachment = normalize_attachment(body)
    if not attachment_id:
        return failure(
            message="Attachment upload succeeded but no attachment ID could be extracted.",
            code="ATTACHMENT_ID_MISSING",
            details={"response": body},
            request_id=request_id,
        )

    return success(
        message="Attachment uploaded successfully.",
        data={
            "attachment_id": attachment_id,
            "attachment": attachment,
            "raw_response": body,
            "follow_up_hint": (
                "Use this attachment_id in create_evaluation_task.py as --attachment-id."
            ),
            "known_create_endpoint": build_url(CREATE_TASK_PATH),
        },
        request_id=request_id,
    )


def main() -> None:
    parser = build_parser()
    args = parser.parse_args()
    payload = upload_video(
        file_path=args.file,
        api_key=args.api_key,
        timeout=args.timeout,
        internal_use_only=args.internal_use_only,
    )
    print_json(payload)


if __name__ == "__main__":
    try:
        main()
    except Exception as exc:
        handle_top_level_exception(exc)