import { json } from '@sveltejs/kit';
import type { RequestHandler } from './$types';

const id = { name: 'id', in: 'path', required: true, schema: { type: 'string' } };
const usageId = { name: 'usageId', in: 'path', required: true, schema: { type: 'string' } };
const idempotency = {
	name: 'Idempotency-Key',
	in: 'header',
	required: true,
	schema: { type: 'string' }
};
const ok = { '200': { description: 'Erfolgreich' } };
const jsonBody = (schema: Record<string, unknown>) => ({
	required: true,
	content: { 'application/json': { schema } }
});

export const GET: RequestHandler = () =>
	json({
		openapi: '3.1.0',
		info: {
			title: 'Sendewerk API',
			version: '1.0.0',
			description:
				'Versionierte API für technische Redaktionszugänge. Schreibzugriffe benötigen einen Idempotency-Key.'
		},
		servers: [{ url: '/api/v1' }],
		security: [{ bearerAuth: [] }],
		components: {
			securitySchemes: {
				bearerAuth: { type: 'http', scheme: 'bearer', bearerFormat: 'Sendewerk technical token' }
			},
			schemas: {
				PieceWrite: {
					type: 'object',
					properties: {
						title: { type: 'string' },
						summary: { type: 'string' },
						status: { enum: ['inbox', 'preparing', 'ready'] },
						durationSeconds: { type: 'integer', minimum: 0 }
					}
				},
				ShowWrite: {
					type: 'object',
					required: ['title'],
					properties: {
						title: { type: 'string' },
						startsAtUtc: { type: ['string', 'null'], format: 'date-time' },
						templateId: { type: ['string', 'null'] }
					}
				}
			}
		},
		paths: {
			'/pieces': {
				get: { summary: 'Pieces lesen', responses: ok },
				post: {
					summary: 'Piece anlegen',
					parameters: [idempotency],
					requestBody: jsonBody({ $ref: '#/components/schemas/PieceWrite' }),
					responses: { '201': { description: 'Angelegt' } }
				}
			},
			'/pieces/{id}': {
				get: { summary: 'Piece lesen', parameters: [id], responses: ok },
				patch: {
					summary: 'Piece ändern',
					parameters: [id],
					requestBody: jsonBody({
						allOf: [
							{ $ref: '#/components/schemas/PieceWrite' },
							{ type: 'object', required: ['revision'] }
						]
					}),
					responses: ok
				}
			},
			'/shows': {
				get: { summary: 'Streams lesen', responses: ok },
				post: {
					summary: 'Stream anlegen',
					parameters: [idempotency],
					requestBody: jsonBody({ $ref: '#/components/schemas/ShowWrite' }),
					responses: { '201': { description: 'Angelegt' } }
				}
			},
			'/shows/{id}': { get: { summary: 'Stream lesen', parameters: [id], responses: ok } },
			'/shows/{id}/usages': {
				post: {
					summary: 'Piece einplanen',
					parameters: [id, idempotency],
					requestBody: jsonBody({ type: 'object', required: ['revision', 'pieceId'] }),
					responses: { '201': { description: 'Eingeplant' } }
				}
			},
			'/shows/{id}/usages/{usageId}': {
				patch: {
					summary: 'Einplanung sortieren',
					parameters: [id, usageId, idempotency],
					requestBody: jsonBody({ type: 'object', required: ['revision', 'position'] }),
					responses: ok
				}
			}
		}
	});