#!/bin/bash

# Pre-commit hook to generate cv.webp from cv.pdf

# Check if cv.pdf exists and is staged
if git diff --cached --name-only | grep -q "^cv\.pdf$"; then
    echo "cv.pdf is being committed, generating cv.webp..."

    # Generate webp from first page of PDF
    if [ -f "cv.pdf" ]; then
        # Use pdftoppm to convert first page to PNG, then ImageMagick to convert to WebP
        pdftoppm -png -f 1 -l 1 -singlefile cv.pdf temp_cv && \
        magick temp_cv.png -quality 85 img/cv.webp && \
        rm -f temp_cv.png

        if [ $? -eq 0 ]; then
            echo "Successfully generated img/cv.webp"
            # Add the generated image to the commit
            git add img/cv.webp
        else
            echo "Warning: Failed to generate cv.webp"
            exit 1
        fi
    else
        echo "Warning: cv.pdf not found, skipping cv.webp generation"
    fi
elif [ -f "cv.pdf" ]; then
    # cv.pdf exists but is not being committed, check if it's newer than cv.webp
    if [ ! -f "img/cv.webp" ] || [ "cv.pdf" -nt "img/cv.webp" ]; then
        echo "cv.pdf has been modified but not staged. Generating cv.webp anyway..."

        pdftoppm -png -f 1 -l 1 -singlefile cv.pdf temp_cv && \
        magick temp_cv.png -quality 85 img/cv.webp && \
        rm -f temp_cv.png

        if [ $? -eq 0 ]; then
            echo "Successfully generated img/cv.webp"
            git add img/cv.webp
        else
            echo "Warning: Failed to generate cv.webp"
            exit 1
        fi
    fi
fi

exit 0