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| 1 | +import type { FastifyReply, FastifyRequest } from 'fastify' |
| 2 | +import type { MCPRequest, MCPResponse } from '../core/types/index.js' |
| 3 | +import { SourceService } from '../services/source.service.js' |
| 4 | + |
| 5 | +interface ToolsCallParams { |
| 6 | + name: string |
| 7 | + arguments: { |
| 8 | + tmdbId: string |
| 9 | + mediaType: 'movie' |
| 10 | + } | { |
| 11 | + tmdbId: string |
| 12 | + mediaType: 'tv' |
| 13 | + season: number |
| 14 | + episode: number |
| 15 | + } |
| 16 | +} |
| 17 | + |
| 18 | +export class MCPController { |
| 19 | + constructor(private sourceService: SourceService) {} |
| 20 | + |
| 21 | + async handle(request: FastifyRequest, reply: FastifyReply) { |
| 22 | + const body = request.body as MCPRequest | undefined |
| 23 | + |
| 24 | + if (!body || !body.method) { |
| 25 | + return reply.code(400).send({ |
| 26 | + id: body?.id ?? request.id, |
| 27 | + error: { code: 400, message: 'Invalid MCP request' }, |
| 28 | + } satisfies MCPResponse) |
| 29 | + } |
| 30 | + |
| 31 | + switch (body.method) { |
| 32 | + case 'tools/list': |
| 33 | + return this.handleToolsList(body, reply) |
| 34 | + case 'tools/call': |
| 35 | + return this.handleToolsCall(body, reply) |
| 36 | + default: |
| 37 | + return reply.code(400).send({ |
| 38 | + id: body.id ?? request.id, |
| 39 | + error: { code: 400, message: `Unsupported method: ${body.method}` }, |
| 40 | + } satisfies MCPResponse) |
| 41 | + } |
| 42 | + } |
| 43 | + |
| 44 | + private async handleToolsList(req: MCPRequest, reply: FastifyReply) { |
| 45 | + const tools =[ |
| 46 | + { |
| 47 | + name: 'omss_get_sources', |
| 48 | + description: |
| 49 | + 'Fetches streaming sources for a movie or TV episode by TMDB id using the OMSS backend.', |
| 50 | + inputSchema: { |
| 51 | + type: 'object', |
| 52 | + properties: { |
| 53 | + tmdbId: { type: 'string', description: 'TMDB id (stringified number).' }, |
| 54 | + mediaType: { |
| 55 | + type: 'string', |
| 56 | + enum: ['movie', 'tv'], |
| 57 | + description: 'Type of media to fetch sources for.', |
| 58 | + }, |
| 59 | + season: { |
| 60 | + type: 'integer', |
| 61 | + description: 'Season number (required for tv).', |
| 62 | + }, |
| 63 | + episode: { |
| 64 | + type: 'integer', |
| 65 | + description: 'Episode number (required for tv).', |
| 66 | + }, |
| 67 | + }, |
| 68 | + required: ['tmdbId', 'mediaType'], |
| 69 | + }, |
| 70 | + }, |
| 71 | + ] |
| 72 | + |
| 73 | + const res: MCPResponse = { |
| 74 | + id: req.id, |
| 75 | + result: { tools }, |
| 76 | + } |
| 77 | + return reply.send(res) |
| 78 | + } |
| 79 | + |
| 80 | + private async handleToolsCall(req: MCPRequest, reply: FastifyReply) { |
| 81 | + const params = req.params as ToolsCallParams | undefined |
| 82 | + if (!params || !params.name) { |
| 83 | + return reply.code(400).send({ |
| 84 | + id: req.id, |
| 85 | + error: { code: 400, message: 'Missing tool name in params' }, |
| 86 | + } satisfies MCPResponse) |
| 87 | + } |
| 88 | + |
| 89 | + if (params.name !== 'omss_get_sources') { |
| 90 | + return reply.code(400).send({ |
| 91 | + id: req.id, |
| 92 | + error: { code: 400, message: `Unknown tool: ${params.name}` }, |
| 93 | + } satisfies MCPResponse) |
| 94 | + } |
| 95 | + |
| 96 | + const args = params.arguments as ToolsCallParams['arguments'] |
| 97 | + if (!args?.tmdbId || !args?.mediaType) { |
| 98 | + return reply.code(400).send({ |
| 99 | + id: req.id, |
| 100 | + error: { |
| 101 | + code: 400, |
| 102 | + message: 'tmdbId and mediaType are required', |
| 103 | + }, |
| 104 | + } satisfies MCPResponse) |
| 105 | + } |
| 106 | + |
| 107 | + try { |
| 108 | + let result |
| 109 | + if (args.mediaType === 'movie') { |
| 110 | + // Reuse the movie path logic |
| 111 | + result = await this.sourceService.getMovieSources(args.tmdbId) |
| 112 | + } else { |
| 113 | + // mediaType === 'tv' |
| 114 | + if ( |
| 115 | + typeof args.season !== 'number' || |
| 116 | + typeof args.episode !== 'number' |
| 117 | + ) { |
| 118 | + return reply.code(400).send({ |
| 119 | + id: req.id, |
| 120 | + error: { |
| 121 | + code: 400, |
| 122 | + message: |
| 123 | + 'season and episode are required for mediaType=tv', |
| 124 | + }, |
| 125 | + } satisfies MCPResponse) |
| 126 | + } |
| 127 | + |
| 128 | + result = await this.sourceService.getTVSources( |
| 129 | + args.tmdbId, |
| 130 | + args.season, |
| 131 | + args.episode, |
| 132 | + ) |
| 133 | + } |
| 134 | + |
| 135 | + const res: MCPResponse = { |
| 136 | + id: req.id, |
| 137 | + result, // this is the OMSS SourceResponse |
| 138 | + } |
| 139 | + return reply.send(res) |
| 140 | + } catch (err: any) { |
| 141 | + const res: MCPResponse = { |
| 142 | + id: req.id, |
| 143 | + error: { |
| 144 | + code: 500, |
| 145 | + message: 'Failed to fetch sources from OMSS', |
| 146 | + data: { message: err?.message ?? String(err) }, |
| 147 | + }, |
| 148 | + } |
| 149 | + return reply.code(500).send(res) |
| 150 | + } |
| 151 | + } |
| 152 | +} |
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