{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "https://userscript.moukaeritai.work/youtube.com/data-format/data-format-v2.schema.json",
  "title": "YouTube Playlist Saver Data Format v2",
  "description": "Version 2 data format which stores metadata (title, channel, addedAt) for each video ID.",
  "type": "object",
  "required": [
    "version",
    "playlists"
  ],
  "properties": {
    "version": {
      "type": "integer",
      "const": 2,
      "description": "Data format version number."
    },
    "playlists": {
      "type": "object",
      "additionalProperties": {
        "type": "object",
        "description": "Map of saved videos within a playlist, keyed by Video ID.",
        "additionalProperties": {
          "type": "object",
          "description": "Metadata for a specific video.",
          "properties": {
            "title": {
              "type": [
                "string",
                "null"
              ],
              "description": "The title of the video."
            },
            "channel": {
              "type": [
                "string",
                "null"
              ],
              "description": "The uploader channel name."
            },
            "addedAt": {
              "type": [
                "integer",
                "null"
              ],
              "description": "Unix timestamp (ms) when the video was first saved."
            }
          },
          "required": [
            "title",
            "channel",
            "addedAt"
          ]
        }
      },
      "description": "Map of playlists, keyed by Playlist ID."
    }
  },
  "additionalProperties": false,
  "examples": [
    {
      "version": 2,
      "playlists": {
        "PL12345ABCDE": {
          "dQw4w9WgXcQ": {
            "title": "Rick Astley - Never Gonna Give You Up (Official Music Video)",
            "channel": "Rick Astley",
            "addedAt": 1700000000000
          }
        }
      }
    }
  ]
}