#!/bin/bash

if [ -z "$1" ]; then
    echo "Ошибка: укажите ссылку на видео."
    exit 1
fi

VIDEO_URL=$1
shift
ADDITIONAL_ARGS="$@" 

VIDEO_ID=$(echo -n "$VIDEO_URL" | md5sum | awk '{print $1}')

mkdir -p "videos"

yt-dlp --skip-download --write-info-json -o "videos/${VIDEO_ID}" "$VIDEO_URL" $ADDITIONAL_ARGS
yt-dlp --skip-download --write-thumbnail -o "videos/${VIDEO_ID}_preview" "$VIDEO_URL" $ADDITIONAL_ARGS
PREVIEW_FILENAME=$(find videos -type f -iname "${VIDEO_ID}_preview*")
yt-dlp -f "bestvideo[ext=mp4]+bestaudio[ext=m4a]/best[ext=mp4]/best" -o "videos/${VIDEO_ID}_video" "$VIDEO_URL" $ADDITIONAL_ARGS
VIDEO_FILENAME=$(find videos -type f -iname "${VIDEO_ID}_video*")

# ffmpeg -i "$VIDEO_FILENAME" \
#   -vf "scale='min(1920,iw)':'min(1080,ih)':force_original_aspect_ratio=decrease" \
#   -c:v libx264 -preset slow -crf 23 \
#   -c:a copy \
#   "videos/${VIDEO_ID}_video_compressed.mp4"

mv $VIDEO_FILENAME "videos/${VIDEO_ID}_video.mp4"
VIDEO_FILENAME="videos/${VIDEO_ID}_video.mp4"

NAME=$(jq -r '.fulltitle' "videos/${VIDEO_ID}.info.json")
DESCRIPTION=$(jq -r '.description' "videos/${VIDEO_ID}.info.json")
CHANNEL_NAME=$(jq -r '.uploader' "videos/${VIDEO_ID}.info.json")
CHANNEL_ID=$(jq -r '.channel_id' "videos/${VIDEO_ID}.info.json")
CHANNEL_URL=$(jq -r '.uploader_url' "videos/${VIDEO_ID}.info.json")

yt-dlp --write-thumbnail --skip-download \
  --playlist-items 0 -o "videos/${CHANNEL_ID}_avatar" "$CHANNEL_URL" $ADDITIONAL_ARGS
AVATAR_FILENAME=$(find videos -type f -iname "${CHANNEL_ID}_avatar*")

jq --arg id "$VIDEO_ID" \
  --arg name "$NAME" \
  --arg description "$DESCRIPTION" \
  --arg video_file "${VIDEO_FILENAME}" \
  --arg image_file "${PREVIEW_FILENAME}" \
  --arg channel_name "$CHANNEL_NAME" \
  --arg channel_avatar_file "${AVATAR_FILENAME}" \
  '{
    id: $id,
    name: $name,
    description: $description,
    "video-file": $video_file,
    "image-file": $image_file,
    "channel-name": $channel_name,
    "channel-avatar-file": $channel_avatar_file
  }' \
  "videos/${VIDEO_ID}.info.json" > "videos/${VIDEO_ID}.json"

rm "videos/${VIDEO_ID}.info.json"

echo "Видео успешно скачано"