Ios Icon Gen

#!/usr/bin/env swift

import AppKit
import Foundation

// MARK: - Configuration

struct IconSpec {
    let symbolName: String
    let assetName: String
    let baseSize: CGFloat
    let color: NSColor
    let weight: NSFont.Weight
}

func parseColor(_ hex: String) -> NSColor {
    var hex = hex.trimmingCharacters(in: .whitespacesAndNewlines)
    if hex.hasPrefix("#") { hex.removeFirst() }
    guard hex.count == 6, let value = UInt64(hex, radix: 16) else {
        return NSColor(red: 142/255, green: 142/255, blue: 147/255, alpha: 1.0)
    }
    return NSColor(
        red: CGFloat((value >> 16) & 0xFF) / 255,
        green: CGFloat((value >> 8) & 0xFF) / 255,
        blue: CGFloat(value & 0xFF) / 255,
        alpha: 1.0
    )
}

func parseWeight(_ name: String) -> NSFont.Weight {
    switch name.lowercased() {
    case "ultralight": return .ultraLight
    case "thin": return .thin
    case "light": return .light
    case "regular": return .regular
    case "medium": return .medium
    case "semibold": return .semibold
    case "bold": return .bold
    case "heavy": return .heavy
    case "black": return .black
    default: return .thin
    }
}

// MARK: - Generation

enum IconError: Error, CustomStringConvertible {
    case directoryCreation(String)
    case symbolNotFound(String)
    case configurationFailed(String)
    case pngCreation(String)
    case fileWrite(String)

    var description: String {
        switch self {
        case .directoryCreation(let msg): return msg
        case .symbolNotFound(let msg): return msg
        case .configurationFailed(let msg): return msg
        case .pngCreation(let msg): return msg
        case .fileWrite(let msg): return msg
        }
    }
}

func generateIcon(_ spec: IconSpec, outputDir: String) throws {
    let dir = "\(outputDir)/\(spec.assetName).imageset"
    do {
        try FileManager.default.createDirectory(atPath: dir, withIntermediateDirectories: true)
    } catch {
        throw IconError.directoryCreation("Could not create output directory '\(dir)': \(error.localizedDescription)")
    }

    let scales: [(suffix: String, multiplier: CGFloat)] = [("", 1), ("@2x", 2), ("@3x", 3)]

    for scale in scales {
        let pixelSize = spec.baseSize * scale.multiplier
        let imageSize = NSSize(width: pixelSize, height: pixelSize)

        let config = NSImage.SymbolConfiguration(
            pointSize: pixelSize * 0.40,
            weight: spec.weight,
            scale: .large
        )

        guard let symbol = NSImage(systemSymbolName: spec.symbolName, accessibilityDescription: nil) else {
            throw IconError.symbolNotFound("SF Symbol '\(spec.symbolName)' not found. Run 'SF Symbols' app to browse available names.")
        }

        guard let configured = symbol.withSymbolConfiguration(config) else {
            throw IconError.configurationFailed("Could not apply symbol configuration to '\(spec.symbolName)'")
        }

        let image = NSImage(size: imageSize, flipped: false) { rect in
            let symSize = configured.size
            let x = (rect.width - symSize.width) / 2
            let y = (rect.height - symSize.height) / 2
            let drawRect = NSRect(x: x, y: y, width: symSize.width, height: symSize.height)

            let tinted = NSImage(size: symSize, flipped: false) { tintRect in
                configured.draw(in: tintRect)
                spec.color.set()
                tintRect.fill(using: .sourceAtop)
                return true
            }

            tinted.draw(in: drawRect, from: .zero, operation: .sourceOver, fraction: 1.0)
            return true
        }

        guard let tiffData = image.tiffRepresentation,
              let bitmap = NSBitmapImageRep(data: tiffData),
              let pngData = bitmap.representation(using: .png, properties: [:]) else {
            throw IconError.pngCreation("Failed to create PNG for \(spec.assetName)\(scale.suffix)")
        }

        let fileName = "\(spec.assetName)\(scale.suffix).png"
        do {
            try pngData.write(to: URL(fileURLWithPath: "\(dir)/\(fileName)"))
        } catch {
            throw IconError.fileWrite("Failed to write \(fileName): \(error.localizedDescription)")
        }
        print("  \(fileName) (\(Int(pixelSize))x\(Int(pixelSize)))")
    }

    // Write Contents.json
    let json = """
    {
      "images" : [
        {
          "filename" : "\(spec.assetName).png",
          "idiom" : "universal",
          "scale" : "1x"
        },
        {
          "filename" : "\(spec.assetName)@2x.png",
          "idiom" : "universal",
          "scale" : "2x"
        },
        {
          "filename" : "\(spec.assetName)@3x.png",
          "idiom" : "universal",
          "scale" : "3x"
        }
      ],
      "info" : {
        "author" : "xcode",
        "version" : 1
      }
    }
    """
    do {
        try json.write(toFile: "\(dir)/Contents.json", atomically: true, encoding: .utf8)
    } catch {
        throw IconError.fileWrite("Failed to write Contents.json: \(error.localizedDescription)")
    }
}

func requireOptionValue(_ args: [String], at index: Int, flag: String) -> String {
    guard index < args.count else {
        fputs("ERROR: Missing value for \(flag)\n", stderr)
        exit(1)
    }
    let value = args[index]
    if value.hasPrefix("--") {
        fputs("ERROR: Missing value for \(flag)\n", stderr)
        exit(1)
    }
    return value
}

// MARK: - CLI

let args = CommandLine.arguments

if args.count < 3 || args.contains("--help") || args.contains("-h") {
    print("""
    Usage: generate_icons.swift <sf-symbol-name> <asset-name> [options]

    Options:
      --size <pt>       Base size in points (default: 68)
      --color <hex>     Color hex code (default: 8E8E93)
      --weight <name>   Font weight: ultralight|thin|light|regular|medium|semibold|bold|heavy|black (default: thin)
      --output <dir>    Output directory (default: /tmp/icons)

    Examples:
      generate_icons.swift doc.text.below.ecg editTool_expenseReport
      generate_icons.swift person.crop.rectangle editTool_businessCard --color 007AFF --weight regular
      generate_icons.swift receipt myReceipt --size 48 --output ./Assets.xcassets/icons

    Browse SF Symbol names: open the SF Symbols app (free from Apple) or https://developer.apple.com/sf-symbols/
    """)
    exit(0)
}

let symbolName = args[1]
let assetName = args[2]

var baseSize: CGFloat = 68
var colorHex = "8E8E93"
var weightName = "thin"
var outputDir = "/tmp/icons"

var i = 3
while i < args.count {
    switch args[i] {
    case "--size":
        let raw = requireOptionValue(args, at: i + 1, flag: "--size")
        guard let size = Double(raw), size > 0 else {
            fputs("ERROR: --size must be a positive number\n", stderr)
            exit(1)
        }
        baseSize = CGFloat(size)
        i += 2
        continue
    case "--color":
        colorHex = requireOptionValue(args, at: i + 1, flag: "--color")
        let stripped = colorHex.hasPrefix("#") ? String(colorHex.dropFirst()) : colorHex
        guard stripped.count == 6, UInt64(stripped, radix: 16) != nil else {
            fputs("ERROR: --color must be a 6-digit hex code (e.g. 007AFF)\n", stderr)
            exit(1)
        }
        i += 2
        continue
    case "--weight":
        weightName = requireOptionValue(args, at: i + 1, flag: "--weight")
        let validWeights = ["ultralight", "thin", "light", "regular", "medium", "semibold", "bold", "heavy", "black"]
        guard validWeights.contains(weightName.lowercased()) else {
            fputs("ERROR: --weight must be one of: \(validWeights.joined(separator: ", "))\n", stderr)
            exit(1)
        }
        i += 2
        continue
    case "--output":
        outputDir = requireOptionValue(args, at: i + 1, flag: "--output")
        i += 2
        continue
    default:
        fputs("WARNING: Unknown option \(args[i])\n", stderr)
    }
    i += 1
}

let spec = IconSpec(
    symbolName: symbolName,
    assetName: assetName,
    baseSize: baseSize,
    color: parseColor(colorHex),
    weight: parseWeight(weightName)
)

print("Generating \(assetName) from SF Symbol '\(symbolName)':")
do {
    try generateIcon(spec, outputDir: outputDir)
    print("Output: \(outputDir)/\(assetName).imageset/")
} catch {
    fputs("ERROR: \(error)\n", stderr)
    exit(1)
}

#!/bin/bash
#
# Generate iOS icon imagesets from Iconify API (275k+ open source icons)
# Uses: curl (download SVG) + sips (SVG->PNG conversion, built into macOS)
#
# Usage:
#   iconify_gen.sh <icon-id> <asset-name> [options]
#   iconify_gen.sh search <query> [--prefix <collection>] [--limit <n>]
#
# Examples:
#   iconify_gen.sh mdi:receipt-text-outline myExpenseIcon
#   iconify_gen.sh search "business card"
#   iconify_gen.sh search receipt --prefix mdi

set -euo pipefail

API_BASE="https://api.iconify.design"
readonly CURL_OPTS=(--fail --silent --show-error --connect-timeout 10 --max-time 30)

# Defaults
SIZE=68
COLOR="8E8E93"
OUTPUT="/tmp/icons"
LIMIT=20

require_value() {
    local flag="$1"
    local value="${2-}"
    if [[ -z "$value" || "$value" == --* ]]; then
        echo "ERROR: ${flag} requires a value" >&2
        exit 1
    fi
}

usage() {
    cat <<'EOF'
Usage:
  iconify_gen.sh <icon-id> <asset-name> [options]    Generate an icon imageset
  iconify_gen.sh search <query> [options]             Search for icons
  iconify_gen.sh preview <icon-id>                    Download preview SVG
  iconify_gen.sh collections                          List popular icon collections

Generate Options:
  --size <pt>       Base size in points (default: 68)
  --color <hex>     Color hex without # (default: 8E8E93)
  --output <dir>    Output directory (default: /tmp/icons)

Search Options:
  --prefix <name>   Filter by collection (e.g., mdi, lucide, tabler, ph)
  --limit <n>       Max results (default: 20)

Icon ID Format: <collection>:<icon-name>
  Examples: mdi:receipt-text-outline, lucide:credit-card, ph:address-book

Popular Collections:
  mdi      Material Design Icons (7400+ icons)
  lucide   Lucide (1700+ icons)
  tabler   Tabler Icons (6000+ icons)
  ph       Phosphor (9000+ icons)
  ri       Remix Icon (2800+ icons)
  carbon   Carbon (2100+ icons)
EOF
    exit 0
}

search_icons() {
    local query="$1"
    shift
    local prefix=""

    while [[ $# -gt 0 ]]; do
        case "$1" in
            --prefix) require_value --prefix "${2-}"; prefix="$2"; shift 2 ;;
            --limit) require_value --limit "${2-}"; LIMIT="$2"; shift 2 ;;
            *) shift ;;
        esac
    done

    local encoded_query
    encoded_query="$(python3 -c "import urllib.parse, sys; print(urllib.parse.quote(sys.argv[1]))" "$query")"
    local url="${API_BASE}/search?query=${encoded_query}&limit=${LIMIT}"
    if [[ -n "$prefix" ]]; then
        url="${url}&prefix=${prefix}"
    fi

    local response
    response=$(curl "${CURL_OPTS[@]}" "$url") || { echo "ERROR: Search request failed"; exit 1; }

    local total
    total=$(echo "$response" | python3 -c "import sys,json; print(json.load(sys.stdin).get('total',0))")

    echo "Found ${total} icons for '${query}':"
    echo ""
    echo "$response" | python3 -c "
import sys, json
data = json.load(sys.stdin)
for icon in data.get('icons', []):
    print(f'  {icon}')
"
    echo ""
    echo "Generate with: iconify_gen.sh <icon-id> <asset-name>"
    echo "Preview with:  iconify_gen.sh preview <icon-id>"
}

list_collections() {
    echo "Popular Iconify collections:"
    echo ""
    local resp
    resp=$(curl "${CURL_OPTS[@]}" "${API_BASE}/collections") || { echo "ERROR: Failed to fetch collections list"; exit 1; }
    echo "$resp" | python3 -c "
import sys, json
data = json.load(sys.stdin)
popular = ['mdi','lucide','tabler','ph','ri','carbon','solar','heroicons','bi','octicon','ion','fe','charm','ci','iconoir','basil','uil','mingcute','flowbite','mynaui']
for k in popular:
    if k in data:
        v = data[k]
        name = v.get('name','')
        total = v.get('total',0)
        print(f'  {k:12s} {name} ({total} icons)')
"
    echo ""
    echo "Full list: https://icon-sets.iconify.design/"
}

preview_icon() {
    local icon_id="$1"
    local collection="${icon_id%%:*}"
    local name="${icon_id#*:}"
    local url="${API_BASE}/${collection}/${name}.svg?width=136&height=136&color=%23${COLOR}"
    local outfile="/tmp/iconify_preview_${collection}_${name}.svg"

    curl "${CURL_OPTS[@]}" "$url" -o "$outfile" || { echo "ERROR: Icon '${icon_id}' not found"; exit 1; }
    echo "Preview SVG: ${outfile}"
    echo "URL: ${url}"

    # Also convert to PNG for visual check
    local pngfile="/tmp/iconify_preview_${collection}_${name}.png"
    sips -s format png "$outfile" --out "$pngfile" >/dev/null 2>&1 || echo "WARNING: sips conversion failed; PNG may be incorrect"
    echo "Preview PNG: ${pngfile}"
}

generate_icon() {
    local icon_id="$1"
    local asset_name="$2"
    shift 2

    while [[ $# -gt 0 ]]; do
        case "$1" in
            --size) require_value --size "${2-}"; SIZE="$2"; shift 2 ;;
            --color) require_value --color "${2-}"; COLOR="$2"; shift 2 ;;
            --output) require_value --output "${2-}"; OUTPUT="$2"; shift 2 ;;
            *) shift ;;
        esac
    done

    local collection="${icon_id%%:*}"
    local name="${icon_id#*:}"
    local imageset_dir="${OUTPUT}/${asset_name}.imageset"

    mkdir -p "$imageset_dir"

    echo "Generating ${asset_name} from Iconify '${icon_id}':"

    local scales=("1:${SIZE}" "2:$((SIZE * 2))" "3:$((SIZE * 3))")

    for scale_info in "${scales[@]}"; do
        local scale="${scale_info%%:*}"
        local px="${scale_info#*:}"
        local suffix=""
        [[ "$scale" != "1" ]] && suffix="@${scale}x"

        local svg_url="${API_BASE}/${collection}/${name}.svg?width=${px}&height=${px}&color=%23${COLOR}"
        local svg_file="${imageset_dir}/${asset_name}${suffix}.svg"
        local png_file="${imageset_dir}/${asset_name}${suffix}.png"

        curl "${CURL_OPTS[@]}" "$svg_url" -o "$svg_file" || { echo "ERROR: Failed to download icon '${icon_id}'"; exit 1; }
        sips -s format png "$svg_file" --out "$png_file" >/dev/null 2>&1 || echo "WARNING: sips conversion may have failed for ${svg_file}"
        rm "$svg_file"

        echo "  ${asset_name}${suffix}.png (${px}x${px})"
    done

    # Write Contents.json
    cat > "${imageset_dir}/Contents.json" <<JSONEOF
{
  "images" : [
    {
      "filename" : "${asset_name}.png",
      "idiom" : "universal",
      "scale" : "1x"
    },
    {
      "filename" : "${asset_name}@2x.png",
      "idiom" : "universal",
      "scale" : "2x"
    },
    {
      "filename" : "${asset_name}@3x.png",
      "idiom" : "universal",
      "scale" : "3x"
    }
  ],
  "info" : {
    "author" : "xcode",
    "version" : 1
  }
}
JSONEOF

    echo "Output: ${imageset_dir}/"
}

# Main
[[ $# -eq 0 ]] && usage
[[ "$1" == "--help" || "$1" == "-h" ]] && usage

case "$1" in
    search)
        shift
        [[ $# -eq 0 ]] && { echo "Usage: iconify_gen.sh search <query>"; exit 1; }
        search_icons "$@"
        ;;
    preview)
        shift
        [[ $# -eq 0 ]] && { echo "Usage: iconify_gen.sh preview <icon-id>"; exit 1; }
        preview_icon "$1"
        ;;
    collections)
        list_collections
        ;;
    *)
        [[ $# -lt 2 ]] && { echo "Usage: iconify_gen.sh <icon-id> <asset-name> [options]"; exit 1; }
        generate_icon "$@"
        ;;
esac