{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://github.com/Abdess/retrobios/schemas/database.schema.json",
  "title": "RetroBIOS content database",
  "type": "object",
  "additionalProperties": false,
  "required": ["schema_version", "generated_at", "total_files", "total_size", "files", "indexes"],
  "properties": {
    "schema_version": { "const": 1 },
    "generated_at": { "type": "string", "format": "date-time" },
    "total_files": { "type": "integer", "minimum": 0 },
    "total_size": { "type": "integer", "minimum": 0 },
    "files": {
      "type": "object",
      "propertyNames": { "pattern": "^[a-f0-9]{40}$" },
      "additionalProperties": {
        "type": "object",
        "additionalProperties": false,
        "required": ["path", "name", "size", "sha1", "md5", "sha256", "crc32", "adler32"],
        "properties": {
          "path": { "type": "string", "minLength": 1 },
          "name": { "type": "string", "minLength": 1 },
          "size": { "type": "integer", "minimum": 0 },
          "sha1": { "type": "string", "pattern": "^[a-f0-9]{40}$" },
          "md5": { "type": "string", "pattern": "^[a-f0-9]{32}$" },
          "sha256": { "type": "string", "pattern": "^[a-f0-9]{64}$" },
          "crc32": { "type": "string", "pattern": "^[a-f0-9]{8}$" },
          "adler32": { "type": "string", "pattern": "^[a-f0-9]{8}$" },
          "provenance": { "type": "object" }
        }
      }
    },
    "indexes": {
      "type": "object",
      "additionalProperties": false,
      "required": ["by_md5", "by_name", "by_crc32", "by_sha256", "by_path_suffix"],
      "properties": {
        "by_md5": { "$ref": "#/$defs/hashIndex" },
        "by_crc32": { "$ref": "#/$defs/hashIndex" },
        "by_sha256": { "$ref": "#/$defs/hashIndex" },
        "by_name": { "$ref": "#/$defs/listIndex" },
        "by_path_suffix": { "$ref": "#/$defs/listIndex" }
      }
    }
  },
  "$defs": {
    "hashIndex": {
      "type": "object",
      "additionalProperties": { "type": "string", "pattern": "^[a-f0-9]{40}$" }
    },
    "listIndex": {
      "type": "object",
      "additionalProperties": {
        "type": "array",
        "items": { "type": "string", "pattern": "^[a-f0-9]{40}$" },
        "minItems": 1,
        "uniqueItems": true
      }
    }
  }
}