{
  "paths": {
    "/calendars/{id}/export.ics": {
      "get": {
        "tags": ["ICS"],
        "summary": "Export calendar as ICS",
        "description": "Exports all events from a calendar in ICS (iCalendar) format with full RFC 5545 support including reminders (VALARM), attendees, all-day events, and recurrence rules. Requires `calendars:read` scope.",
        "operationId": "exportCalendarICS",
        "parameters": [
          {
            "name": "id",
            "in": "path",
            "required": true,
            "schema": { "type": "string", "format": "uuid" },
            "description": "Calendar ID"
          }
        ],
        "responses": {
          "200": {
            "description": "ICS calendar file",
            "content": {
              "text/calendar": {
                "schema": { "type": "string" }
              }
            }
          },
          "401": { "description": "Not authenticated", "content": { "application/json": { "schema": { "$ref": "#/components/schemas/Error" } } } },
          "403": { "description": "Insufficient scope or permission", "content": { "application/json": { "schema": { "$ref": "#/components/schemas/Error" } } } },
          "404": { "description": "Calendar not found", "content": { "application/json": { "schema": { "$ref": "#/components/schemas/Error" } } } }
        }
      }
    },
    "/calendars/import": {
      "post": {
        "tags": ["ICS"],
        "summary": "Import an ICS file",
        "description": "Imports events from an ICS file into a specified calendar. Supports VALARM (reminders), ATTENDEE, TZID, VALUE=DATE (all-day events), and RRULE. The file is sent as multipart form data. Requires `calendars:write` scope.",
        "operationId": "importCalendarICS",
        "requestBody": {
          "required": true,
          "content": {
            "multipart/form-data": {
              "schema": {
                "type": "object",
                "required": ["calendar_id", "file"],
                "properties": {
                  "calendar_id": { "type": "string", "format": "uuid", "description": "Target calendar ID" },
                  "file": { "type": "string", "format": "binary", "description": "ICS file to import" }
                }
              }
            }
          }
        },
        "responses": {
          "200": {
            "description": "Import successful",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "required": ["ok", "imported"],
                  "properties": {
                    "ok": { "type": "boolean", "example": true },
                    "imported": {
                      "type": "object",
                      "properties": {
                        "events": { "type": "integer", "example": 12 }
                      }
                    }
                  }
                }
              }
            }
          },
          "400": { "description": "Validation error or invalid ICS", "content": { "application/json": { "schema": { "$ref": "#/components/schemas/Error" } } } },
          "401": { "description": "Not authenticated", "content": { "application/json": { "schema": { "$ref": "#/components/schemas/Error" } } } },
          "403": { "description": "Insufficient scope or permission", "content": { "application/json": { "schema": { "$ref": "#/components/schemas/Error" } } } }
        }
      }
    },
    "/calendars/import-url": {
      "post": {
        "tags": ["ICS"],
        "summary": "Import from iCal URL",
        "description": "Fetches an iCal feed from the given URL and imports all events into the specified calendar. Supports http, https, and webcal protocols. Requires `calendars:write` scope.",
        "operationId": "importCalendarFromURL",
        "requestBody": {
          "required": true,
          "content": {
            "application/json": {
              "schema": {
                "type": "object",
                "required": ["calendar_id", "url"],
                "properties": {
                  "calendar_id": { "type": "string", "format": "uuid", "description": "Target calendar ID" },
                  "url": { "type": "string", "format": "uri", "description": "iCal feed URL (http, https, or webcal)", "example": "https://example.com/calendar.ics" }
                }
              }
            }
          }
        },
        "responses": {
          "200": {
            "description": "Import successful",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "required": ["ok", "imported", "source"],
                  "properties": {
                    "ok": { "type": "boolean", "example": true },
                    "imported": {
                      "type": "object",
                      "properties": {
                        "events": { "type": "integer", "example": 12 }
                      }
                    },
                    "source": { "type": "string", "format": "uri", "description": "The URL that was imported" }
                  }
                }
              }
            }
          },
          "400": { "description": "Validation error, unreachable URL, or invalid ICS", "content": { "application/json": { "schema": { "$ref": "#/components/schemas/Error" } } } },
          "401": { "description": "Not authenticated", "content": { "application/json": { "schema": { "$ref": "#/components/schemas/Error" } } } },
          "403": { "description": "Insufficient scope or permission", "content": { "application/json": { "schema": { "$ref": "#/components/schemas/Error" } } } }
        }
      }
    },
    "/cal/{token}/feed.ics": {
      "get": {
        "tags": ["ICS"],
        "summary": "Public iCal feed",
        "description": "Returns a public iCal feed for a calendar that has been marked as public. No authentication required. This URL can be used to subscribe to the calendar in Google Calendar, Apple Calendar, Outlook, etc. The `ical_url` is returned in the Calendar object when `is_public` is true.",
        "operationId": "publicCalendarFeed",
        "parameters": [
          {
            "name": "token",
            "in": "path",
            "required": true,
            "schema": { "type": "string" },
            "description": "Public calendar token (from the calendar's ical_url)"
          }
        ],
        "responses": {
          "200": {
            "description": "ICS calendar feed",
            "content": {
              "text/calendar": {
                "schema": { "type": "string" }
              }
            }
          },
          "404": { "description": "Calendar not found or not public", "content": { "application/json": { "schema": { "$ref": "#/components/schemas/Error" } } } }
        },
        "security": []
      }
    }
  }
}