#!/bin/bash
# =============================================================================
# E-TIB Video Optimization for Web Delivery
# =============================================================================
# Produces 720p H.264 versions optimized for hero backgrounds.
# =============================================================================

set -euo pipefail

VIDEO_DIR="./public/assets/videos"
OUTPUT_DIR="./public/assets/videos/web"

mkdir -p "$OUTPUT_DIR"

optimize() {
  local src="$1"
  local out="$2"
  local input="$VIDEO_DIR/$src"
  local output="$OUTPUT_DIR/$out"

  if [ ! -f "$input" ]; then
    echo "⏩ Skipping $src (not found)"
    return
  fi

  if [ -f "$output" ]; then
    echo "✅ Already exists: $out"
    return
  fi

  echo "🎬 Optimizing: $src → $out"
  ffmpeg -i "$input" \
    -vf "scale=-2:720" \
    -c:v libx264 \
    -crf 32 \
    -preset slow \
    -profile:v main \
    -level 3.1 \
    -r 30 \
    -an \
    -movflags +faststart \
    -y "$output"
}

optimize "Kabelpflug_1080p.mp4" "hero-kabelpflug.mp4" &
optimize "Bahnkreuzung_1080p.mp4" "hero-bahnkreuzung.mp4" &
optimize "Bohrung_1080p.mp4" "hero-bohrung.mp4" &
optimize "Messe_1080p.mp4" "hero-messe.mp4" &

wait
echo ""
echo "✅ All videos optimized. Output in: $OUTPUT_DIR"
echo ""
ls -lh "$OUTPUT_DIR"