#!/bin/bash

# Cek dependencies
for cmd in convert yad fc-list bc; do
    if ! command -v $cmd >/dev/null 2>&1; then
        echo "Error: $cmd tidak ditemukan. Instal via sudo apt install imagemagick yad"
        exit 1
    fi
done

# 1. Ambil input user sekaligus (Teks & Rotasi)
user_input=$(yad --form --title="Watermark Settings" --width=350 --center \
    --field="Teks Watermark" "Sample Watermark" \
    --field="Rotasi:CB" "0!90!180!270")

[[ $? -ne 0 ]] && exit 1

TEXT=$(echo "$user_input" | cut -d'|' -f1)
ROTATION=$(echo "$user_input" | cut -d'|' -f2)

# 2. Setup Font
FONT="Noto-Sans-Casual"
if ! fc-list | grep -qi "$FONT"; then
    FONT="Sans"
fi

# 3. Proses File
for FILE in "$@"; do
    [[ ! -f "$FILE" ]] && continue

    echo "Memproses: $(basename "$FILE")"

    # Ambil tinggi gambar untuk kalkulasi font (5.5%)
    HEIGHT=$(identify -format "%h" "$FILE")
    POINTSIZE=$(echo "$HEIGHT * 0.055" | bc | cut -d'.' -f1)

    OUTPUT="$(dirname "$FILE")/wm_$(basename "$FILE")"

    # Jalankan proses watermark (Shadow + Text)
    convert "$FILE" \
        \( -background none -fill "rgba(0,0,0,0.5)" -font "$FONT" -pointsize "$POINTSIZE" \
           label:"$TEXT" -rotate "$ROTATION" -blur 0x3 \) \
        -gravity center -geometry +4+4 -composite \
        \( -background none -fill "rgba(255,255,255,0.8)" -font "$FONT" -pointsize "$POINTSIZE" \
           label:"$TEXT" -rotate "$ROTATION" \) \
        -gravity center -composite \
        "$OUTPUT"

    if [ $? -eq 0 ]; then
        echo "✅ OK: $OUTPUT"
    else
        echo "❌ Gagal: $FILE"
    fi
done

yad --info --title="Selesai" --text="Watermark berhasil ditambahkan!" --timeout=3 --no-buttons