#!/bin/bash

# imgcli.sh — Image processing CLI for OnlyFans profile optimization
# Usage: ./imgcli.sh input.jpg output.jpg --rotate 180 --crop 1500x500

set -e

if [ $# -lt 2 ]; then
  echo "Usage: $0 <input_file> <output_file> [--rotate DEGREES] [--crop WIDTHxHEIGHT]"
  echo "Example: $0 onlyfans-header.original.jpg onlyfans-header.jpg --rotate 180 --crop 1500x500"
  exit 1
fi

INPUT="$1"
OUTPUT="$2"
ROTATE=0
CROP_WIDTH=0
CROP_HEIGHT=0

# Parse options
shift 2
while [[ $# -gt 0 ]]; do
  case "$1" in
    --rotate)
      ROTATE="$2"
      shift 2
      ;;
    --crop)
      IFS='x' read -r CROP_WIDTH CROP_HEIGHT <<< "$2"
      shift 2
      ;;
    *)
      echo "Unknown option: $1"
      exit 1
      ;;
  esac
done

# Validate input file
if [ ! -f "$INPUT" ]; then
  echo "Error: Input file '$INPUT' not found"
  exit 1
fi

# Run Python image processor
python3 << EOF
from PIL import Image
import sys

input_file = "$INPUT"
output_file = "$OUTPUT"
rotate_angle = $ROTATE
crop_width = $CROP_WIDTH
crop_height = $CROP_HEIGHT

try:
    img = Image.open(input_file)
    print(f"Loaded: {input_file} ({img.size[0]}x{img.size[1]})")

    # Step 1: Rotate
    if rotate_angle != 0:
        img = img.rotate(-rotate_angle, expand=True)
        print(f"Rotated {rotate_angle}° → {img.size[0]}x{img.size[1]}")

    # Step 2: Crop
    if crop_width > 0 and crop_height > 0:
        width, height = img.size
        target_ratio = crop_width / crop_height
        current_ratio = width / height

        if current_ratio > target_ratio:
            # Too wide, crop width
            new_width = int(height * target_ratio)
            left = (width - new_width) // 2
            top = 0
            right = left + new_width
            bottom = height
        else:
            # Too tall, crop height - bias toward TOP for face
            new_height = int(width / target_ratio)
            left = 0
            top = int(height * 0.1)
            bottom = min(top + new_height, height)
            if bottom == height:
                top = max(0, height - new_height)
            right = width

        print(f"Crop box: ({left}, {top}, {right}, {bottom})")
        img = img.crop((left, top, right, bottom))
        img = img.resize((crop_width, crop_height), Image.Resampling.LANCZOS)
        print(f"Cropped → {crop_width}x{crop_height}")

    # Save
    img.save(output_file, quality=95)
    print(f"Saved: {output_file}")

except Exception as e:
    print(f"Error: {e}", file=sys.stderr)
    sys.exit(1)
EOF

echo "✓ Done"