{
  "$schema": "http://json-schema.org/draft-06/schema#",
  "$id": "https://c3voc.de/schedule/schema.json",
  "type": "object",
  "additionalProperties": false,
  "properties": {
    "schedule": {
      "$ref": "#/definitions/Schedule"
    },
    "$schema": {
      "type": "string"
    },
    "generator": {
      "type": "object",
      "properties": {
        "name": {
          "type": "string"
        },
        "version": {
          "type": "string"
        },
        "url": {
          "type": "string",
          "format": "uri"
        }
      }
    }
  },
  "required": ["schedule"],
  "definitions": {
    "Schedule": {
      "type": "object",
      "additionalProperties": true,
      "properties": {
        "version": {
          "type": "string"
        },
        "base_url": {
          "description": "base for relative media URIs in this document",
          "type": "string",
          "format": "uri"
        },
        "conference": {
          "$ref": "#/definitions/Conference"
        },
        "rooms": false
      },
      "required": ["conference", "version"]
    },
    "Conference": {
      "type": "object",
      "title": "Conference",
      "required": [
        "title",
        "acronym",
        "days",
        "daysCount",
        "start",
        "end",
        "timeslot_duration"
      ],
      "additionalProperties": false,
      "properties": {
        "acronym": {
          "type": "string",
          "examples": ["36c3", "rc3", "divoc-ptt"],
          "pattern": "^[a-z0-9_-][a-z0-9_]{3,}(-2[0-9]{3}-[a-z]+)?$"
        },
        "title": {
          "type": "string"
        },
        "description": {
          "type": "string"
        },
        "start": {
          "type": "string",
          "$oneOf": [
            { "format": "date" },
            { "format": "date-time" }
          ]
        },
        "end": {
          "type": "string",
          "$oneOf": [
            { "format": "date" },
            { "format": "date-time" }
          ]
        },
        "daysCount": {
          "type": "integer"
        },
        "timeslot_duration": {
          "type": "string"
        },
        "time_zone_name": {
          "type": "string",
          "examples": ["Europe/Amsterdam", "Europe/Berlin", "UTC"],
          "pattern": "^([A-Z][a-z]+/[A-Z][a-z]+)|UTC$"
        },
        "logo": {
          "type": "string",
          "format": "uri",
          "$comment": "absolute URL, or relative to base_url"
        },
        "colors": {
          "type": "object",
          "additionalProperties": true,
          "properties": {
            "primary": {
              "type": "string",
              "format": "color"
            },
            "background": {
              "type": "string",
              "format": "color"
            }
          }
        },
        "keywords": {
          "type": "array",
          "items": {
            "type": "string"
          }
        },
        "url": {
          "description": "URL to the conference schedule or public website",
          "type": "string",
          "format": "uri"
        },
        "tracks": {
          "type": "array",
          "items": {
            "type": "object",
            "properties": {
              "name": {
                "type": "string"
              },
              "slug": {
                "type": "string",
                "pattern": "^[a-z0-9_-]+[a-z0-9]$"
              },
              "color": {
                "type": "string",
                "format": "color"
              }
            }
          }
        },
        "rooms": {
          "type": "array",
          "items": {
            "$ref": "#/definitions/Room"
          }
        },
        "meta": {
          "type": "object",
          "additionalProperties": true
        },
        "days": {
          "type": "array",
          "items": {
            "$ref": "#/definitions/Day"
          }
        }
      }
    },
    "Day": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "index": {
          "type": "integer"
        },
        "date": {
          "type": "string",
          "format": "date"
        },
        "day_start": {
          "type": "string",
          "format": "date-time"
        },
        "day_end": {
          "type": "string",
          "format": "date-time"
        },
        "rooms": {
          "type": "object",
          "patternProperties": {
            ".*": {
              "type": "array",
              "items": {
                "$ref": "#/definitions/Event"
              }
            }
          }
        }
      },
      "required": ["date", "day_end", "day_start", "index", "rooms"]
    },
    "Event": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "guid": {
          "type": "string",
          "format": "uuid"
        },
        "code": {
          "type": "string",
          "pattern": "^[A-Z0-9]+$"
        },
        "id": {
          "type": "integer",
          "minimum": 1,
          "deprecated": true,
          "$comment": "use guid instead"
        },
        "logo": {
          "type": ["string", "null"],
          "format": "uri",
          "description": "absolute URL, or relative to base_url"
        },
        "date": {
          "type": "string",
          "format": "date-time",
          "examples": ["2020-12-14T09:00:00+01:00"]
        },
        "start": {
          "type": "string",
          "pattern": "^(0[0-9]|1[0-9]|2[0-3]):[0-5][0-9]$",
          "examples": ["09:00"]
        },
        "duration": {
          "$ref": "#/definitions/Duration"
        },
        "room": {
          "$ref": "#/definitions/RoomName"
        },
        "slug": {
          "type": "string",
          "pattern": "^[a-z0-9_-]+[a-z0-9]$"
        },
        "url": {
          "type": "string",
          "format": "uri"
        },
        "title": {
          "type": "string"
        },
        "subtitle": {
          "type": ["string", "null"]
        },
        "track": {
          "type":  ["string", "null"]
        },
        "type": {
          "type": "string",
          "examples": [
            "talk",
            "workshop",
            "hands-on",
            "meeting",
            "discussion",
            "game",
            "other"
          ]
        },
        "language": {
          "type": "string",
          "examples": ["en", "de", "cs", "ab"]
        },
        "abstract": {
          "type":  ["string", "null"]
        },
        "description": {
          "type":  ["string", "null"]
        },
        "recording_license": {
          "type": "string"
        },
        "do_not_record": {
          "type":  ["boolean", "null"]
        },
        "do_not_stream": {
          "type":  ["boolean", "string", "null"]
        },
        "persons": {
          "type": "array",
          "items": {
            "$ref": "#/definitions/Person"
          }
        },
        "links": {
          "type": "array",
          "items": {
            "$ref": "#/definitions/Reference"
          }
        },
        "feedback_url": {
          "type": "string",
          "format": "uri"
        },
        "attachments": {
          "type": "array",
          "items": {
            "$ref": "#/definitions/Reference"
          }
        },
        "answers": {
          "type": "array",
          "items": {},
          "$ref": "https://c3voc.de/schedule/submission#/definitions/Answers"
        }
      },
      "required": [
        "abstract",
        "date",
        "duration",
        "guid",
        "id",
        "language",
        "links",
        "persons",
        "room",
        "slug",
        "start",
        "subtitle",
        "title",
        "track",
        "type",
        "url"
      ]
    },
    "Person": {
      "type": "object",
      "properties": {
        "name": {
          "type": "string"
        },
        "guid": {
          "type": "string",
          "format": "uuid",
          "description": "Person UUID generated from email address via uuid5(NS_URL, 'acct:user@domain.tld') or random uuid4() if email not available"
        },
        "id": {
          "type": "integer",
          "description": "deprecated integer person id, use guid with uuid5(NS_URL, 'acct:user@domain.tld') instead"
        },
        "url": {
          "type": "string",
          "format": "uri"
        },
        "links": {
          "type": "array",
          "items": {
            "$ref": "#/definitions/Reference"
          }
        },
        "public_name": {
          "type": "string",
          "deprecated": true,
          "$comment": "use name instead"
        }
      },
      "oneOf": [
        { "$ref": "#/definitions/FrabPerson" },
        { "$ref": "#/definitions/PretalxPerson" }
      ]
    },
    "FrabPerson": {
      "type": "object",
      "properties": {
        "id": {
          "type": "integer"
        },
        "public_name": {
          "type": "string",
          "deprecated": true,
          "$comment": "use name instead"
        }
      },
      "required": ["public_name", "id"]
    },
    "HubAssembly": {
      "type": "object",
      "properties": {
        "name": {
          "type": "string"
        },
        "slug": {
          "type": "string",
          "pattern": "^[a-z0-9_-]+[a-z0-9]$"
        },
        "guid": {
          "type": "string",
          "format": "uuid"
        },
        "url": {
          "type": "string",
          "format": "uri"
        }
      },
      "required": ["name", "guid", "slug"]
    },
    "PretalxPerson": {
      "type": "object",
      "properties": {
        "code": {
          "type": "string",
          "pattern": "^[A-Z0-9]+$"
        },
        "name": {
          "type": "string"
        },
        "avatar": {
          "type": ["string", "null"],
          "format": "uri",
          "description": "absolute URL, or relative to base_url"
        },
        "biography": {
          "type": ["string", "null"]
        },
        "answers": {
          "type": "array",
          "items": {}
        }
      },
      "required": ["name"]
    },
    "Room": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "name": {
          "type": "string"
        },
        "slug": {
          "type": "string",
          "pattern": "^[a-z0-9_-]+[a-z0-9]$"
        },
        "type": {
          "type": "string",
          "enum": ["lecturehall", "stage", "workshop", "outside", "online", "project", "bbb", "hangar", "other"]
        },
        "guid": {
          "type": "string",
          "format": "uuid"
        },
        "stream_id": {
          "type": ["string", "null"]
        },
        "description": {
          "type": ["string", "null"],
          "description": "might also be set as description_de, description_en etc."
        },
        "capacity": {
          "type": ["number", "null"]
        },
        "url": {
          "type": "string",
          "format": "uri"
        },
        "features" :{
          "$ref": "#/definitions/RoomFeatures"
        },
        "assembly": {
          "$ref": "#/definitions/HubAssembly"
        }
      },
      "patternProperties": {
        "description_.+": {
          "type": ["string", "null"]
        }
      },
      "required": ["name", "guid"]
    },
    "RoomName": {
      "type": "string"
    },
    "RoomFeatures": {
      "type": "object",
      "additionalProperties": true,
      "properties": {
        "recording": {
          "type": "string",
          "enum": ["record_by_default", "not_recorded_by_default", "recording_forbidden", "recording_not_possible", "unknown"]
        }
      }
    },
    "Duration": {
      "title": "Duration (hh:mm)",
      "type": "string",
      "examples": ["00:30", "01:30"],
      "pattern": "^[0-9]+:[0-9]{2}$"
    },
    "Reference": {
      "title": "Link or Attachment",
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "type": {
          "type": "string",
          "enum": [
            "slides",
            "paper",
            "web",
            "blog",
            "article",
            "media",
            "related",
            "activitypub"
          ]
        },
        "url": {
          "type": "string",
          "format": "uri"
        },
        "title": {
          "type": "string"
        }
      },
      "required": [
        "url"
      ]
    }
  }
}