#!/bin/bash
#set -x
INPUT="$*"
OUTDIR=$(mktemp -d)
IMGDIR="$GITEA_WORK_DIR/custom/public/assets/img"

ln -s "$INPUT" "$OUTDIR"/schematic.kicad_sch

if [[ -d "$IMGDIR" && -w "$IMGDIR" ]]; then
    # We can use caching
    HASH=$(sha256sum "$INPUT" | cut -c1-64)

    shopt -s nullglob
    IMAGES=("${IMGDIR}"/${HASH}.*.svg)
    shopt -u nullglob

    if [ ${#IMAGES[@]} -le 0 ]; then
        mapfile -t FILES \
            < <(kicad-cli sch export svg --exclude-drawing-sheet --no-background-color --output "$OUTDIR" "$OUTDIR/schematic.kicad_sch" | grep -E 'Plotted to' | sed -r "s/^[^']+'|'[^']+$//g" )

        file_num=1
        for FILE in "${FILES[@]}"; do
            FN="${IMGDIR}/${HASH}.${file_num}.svg"
            inkscape --actions="page-fit-to-selection" -o "$FN" "$FILE"
            file_num=$((file_num + 1))
            break # TODO: find some way to handle related (hierarchical) schematic files, as currently only the active file is made available
        done

        shopt -s nullglob
        IMAGES=("${IMGDIR}"/${HASH}.*.svg)
        shopt -u nullglob
    fi

    for FILE in "${IMAGES[@]}"; do
        echo '<div class="file"><div class="page">'
        # echo "bla"
        echo -n '<img src="/assets/img/'
        echo -n "$(basename "${FILE}")"
        echo -n '"'
        echo -n ' class="full_width kicad_sch pan_zoom"'
        echo '/>'
        echo '</div></div>'
    done

else
    # We'll be generating the images on the fly, including them as base64
    mapfile -t FILES \
        < <(kicad-cli sch export svg --exclude-drawing-sheet --no-background-color --output "$OUTDIR" "$OUTDIR/schematic.kicad_sch" | grep -E 'Plotted to' | sed -r "s/^[^']+'|'[^']+$//g" )
    for FILE in "${FILES[@]}"; do
        echo -n '<div class="file"><div class="page">'
        echo -n '<img src="data:image/svg+xml;base64,'
        inkscape --actions="page-fit-to-selection" -o - "$FILE" | base64 --wrap=0
        echo -n '"'
        echo -n ' class="full_width kicad_sch pan_zoom"'
        echo -n '/>'
        echo '</div></div>'

        break # TODO: find some way to handle related (hierarchical) schematic files, as currently only the active file is made available
    done
fi

rm -R "$OUTDIR"