{"version":3,"file":"transcription.cjs","names":["getTestId","matchFixture","applyChaos","flattenHeaders","proxyAndRecord","isErrorResponse","isTranscriptionResponse"],"sources":["../src/transcription.ts"],"sourcesContent":["import type * as http from \"node:http\";\nimport type { ChatCompletionRequest, Fixture, HandlerDefaults } from \"./types.js\";\nimport { isTranscriptionResponse, isErrorResponse, flattenHeaders, getTestId } from \"./helpers.js\";\nimport { matchFixture } from \"./router.js\";\nimport { writeErrorResponse } from \"./sse-writer.js\";\nimport type { Journal } from \"./journal.js\";\nimport { applyChaos } from \"./chaos.js\";\nimport { proxyAndRecord } from \"./recorder.js\";\n\n/**\n * Extract a text field from multipart form data using regex.\n * NOTE: This runs against the full body including binary audio data.\n * It works because text metadata fields (model, response_format, etc.)\n * appear before the binary audio part in standard multipart encoding.\n * A proper multipart parser would be more robust but is overkill for\n * the small set of fields we extract.\n */\nfunction extractFormField(raw: string, fieldName: string): string | undefined {\n const pattern = new RegExp(\n `Content-Disposition:\\\\s*form-data;[^\\\\r\\\\n]*name=\"${fieldName}\"[^\\\\r\\\\n]*\\\\r\\\\n\\\\r\\\\n([^\\\\r\\\\n]*)`,\n \"i\",\n );\n const match = raw.match(pattern);\n return match?.[1];\n}\n\nexport async function handleTranscription(\n req: http.IncomingMessage,\n res: http.ServerResponse,\n raw: string,\n fixtures: Fixture[],\n journal: Journal,\n defaults: HandlerDefaults,\n setCorsHeaders: (res: http.ServerResponse) => void,\n): Promise {\n setCorsHeaders(res);\n const path = req.url ?? \"/v1/audio/transcriptions\";\n const method = req.method ?? \"POST\";\n\n const model = extractFormField(raw, \"model\") ?? \"whisper-1\";\n const responseFormat = extractFormField(raw, \"response_format\") ?? \"json\";\n\n const syntheticReq: ChatCompletionRequest = {\n model,\n messages: [],\n _endpointType: \"transcription\",\n };\n\n const testId = getTestId(req);\n const fixture = matchFixture(\n fixtures,\n syntheticReq,\n journal.getFixtureMatchCountsForTest(testId),\n defaults.requestTransform,\n );\n\n if (fixture) {\n journal.incrementFixtureMatchCount(fixture, fixtures, testId);\n defaults.logger.debug(`Fixture matched: ${JSON.stringify(fixture.match).slice(0, 120)}`);\n } else {\n defaults.logger.debug(`No fixture matched for request`);\n }\n\n if (\n applyChaos(\n res,\n fixture,\n defaults.chaos,\n req.headers,\n journal,\n { method, path, headers: flattenHeaders(req.headers), body: syntheticReq },\n defaults.registry,\n defaults.logger,\n )\n )\n return;\n\n if (!fixture) {\n if (defaults.record) {\n const proxied = await proxyAndRecord(\n req,\n res,\n syntheticReq,\n \"openai\",\n req.url ?? \"/v1/audio/transcriptions\",\n fixtures,\n defaults,\n raw,\n );\n if (proxied) {\n journal.add({\n method,\n path,\n headers: flattenHeaders(req.headers),\n body: syntheticReq,\n response: { status: res.statusCode ?? 200, fixture: null, source: \"proxy\" },\n });\n return;\n }\n }\n\n const strictStatus = defaults.strict ? 503 : 404;\n const strictMessage = defaults.strict\n ? \"Strict mode: no fixture matched\"\n : \"No fixture matched\";\n journal.add({\n method,\n path,\n headers: flattenHeaders(req.headers),\n body: syntheticReq,\n response: { status: strictStatus, fixture: null },\n });\n writeErrorResponse(\n res,\n strictStatus,\n JSON.stringify({\n error: {\n message: strictMessage,\n type: \"invalid_request_error\",\n code: \"no_fixture_match\",\n },\n }),\n );\n return;\n }\n\n const response = fixture.response;\n\n if (isErrorResponse(response)) {\n const status = response.status ?? 500;\n journal.add({\n method,\n path,\n headers: flattenHeaders(req.headers),\n body: syntheticReq,\n response: { status, fixture },\n });\n writeErrorResponse(res, status, JSON.stringify(response));\n return;\n }\n\n if (!isTranscriptionResponse(response)) {\n journal.add({\n method,\n path,\n headers: flattenHeaders(req.headers),\n body: syntheticReq,\n response: { status: 500, fixture },\n });\n writeErrorResponse(\n res,\n 500,\n JSON.stringify({\n error: {\n message: \"Fixture response is not a transcription type\",\n type: \"server_error\",\n },\n }),\n );\n return;\n }\n\n journal.add({\n method,\n path,\n headers: flattenHeaders(req.headers),\n body: syntheticReq,\n response: { status: 200, fixture },\n });\n\n const t = response.transcription;\n const useVerbose = responseFormat === \"verbose_json\" || t.words != null || t.segments != null;\n\n if (useVerbose) {\n res.writeHead(200, { \"Content-Type\": \"application/json\" });\n res.end(\n JSON.stringify({\n task: \"transcribe\",\n language: t.language ?? \"english\",\n duration: t.duration ?? 0,\n text: t.text,\n words: t.words ?? [],\n segments: t.segments ?? [],\n }),\n );\n } else {\n res.writeHead(200, { \"Content-Type\": \"application/json\" });\n res.end(JSON.stringify({ text: t.text }));\n }\n}\n"],"mappings":";;;;;;;;;;;;;;;AAiBA,SAAS,iBAAiB,KAAa,WAAuC;CAC5E,MAAM,UAAU,IAAI,OAClB,qDAAqD,UAAU,sCAC/D,IACD;AAED,QADc,IAAI,MAAM,QAAQ,GACjB;;AAGjB,eAAsB,oBACpB,KACA,KACA,KACA,UACA,SACA,UACA,gBACe;AACf,gBAAe,IAAI;CACnB,MAAM,OAAO,IAAI,OAAO;CACxB,MAAM,SAAS,IAAI,UAAU;CAE7B,MAAM,QAAQ,iBAAiB,KAAK,QAAQ,IAAI;CAChD,MAAM,iBAAiB,iBAAiB,KAAK,kBAAkB,IAAI;CAEnE,MAAM,eAAsC;EAC1C;EACA,UAAU,EAAE;EACZ,eAAe;EAChB;CAED,MAAM,SAASA,0BAAU,IAAI;CAC7B,MAAM,UAAUC,4BACd,UACA,cACA,QAAQ,6BAA6B,OAAO,EAC5C,SAAS,iBACV;AAED,KAAI,SAAS;AACX,UAAQ,2BAA2B,SAAS,UAAU,OAAO;AAC7D,WAAS,OAAO,MAAM,oBAAoB,KAAK,UAAU,QAAQ,MAAM,CAAC,MAAM,GAAG,IAAI,GAAG;OAExF,UAAS,OAAO,MAAM,iCAAiC;AAGzD,KACEC,yBACE,KACA,SACA,SAAS,OACT,IAAI,SACJ,SACA;EAAE;EAAQ;EAAM,SAASC,+BAAe,IAAI,QAAQ;EAAE,MAAM;EAAc,EAC1E,SAAS,UACT,SAAS,OACV,CAED;AAEF,KAAI,CAAC,SAAS;AACZ,MAAI,SAAS,QAWX;OAVgB,MAAMC,gCACpB,KACA,KACA,cACA,UACA,IAAI,OAAO,4BACX,UACA,UACA,IACD,EACY;AACX,YAAQ,IAAI;KACV;KACA;KACA,SAASD,+BAAe,IAAI,QAAQ;KACpC,MAAM;KACN,UAAU;MAAE,QAAQ,IAAI,cAAc;MAAK,SAAS;MAAM,QAAQ;MAAS;KAC5E,CAAC;AACF;;;EAIJ,MAAM,eAAe,SAAS,SAAS,MAAM;EAC7C,MAAM,gBAAgB,SAAS,SAC3B,oCACA;AACJ,UAAQ,IAAI;GACV;GACA;GACA,SAASA,+BAAe,IAAI,QAAQ;GACpC,MAAM;GACN,UAAU;IAAE,QAAQ;IAAc,SAAS;IAAM;GAClD,CAAC;AACF,wCACE,KACA,cACA,KAAK,UAAU,EACb,OAAO;GACL,SAAS;GACT,MAAM;GACN,MAAM;GACP,EACF,CAAC,CACH;AACD;;CAGF,MAAM,WAAW,QAAQ;AAEzB,KAAIE,gCAAgB,SAAS,EAAE;EAC7B,MAAM,SAAS,SAAS,UAAU;AAClC,UAAQ,IAAI;GACV;GACA;GACA,SAASF,+BAAe,IAAI,QAAQ;GACpC,MAAM;GACN,UAAU;IAAE;IAAQ;IAAS;GAC9B,CAAC;AACF,wCAAmB,KAAK,QAAQ,KAAK,UAAU,SAAS,CAAC;AACzD;;AAGF,KAAI,CAACG,wCAAwB,SAAS,EAAE;AACtC,UAAQ,IAAI;GACV;GACA;GACA,SAASH,+BAAe,IAAI,QAAQ;GACpC,MAAM;GACN,UAAU;IAAE,QAAQ;IAAK;IAAS;GACnC,CAAC;AACF,wCACE,KACA,KACA,KAAK,UAAU,EACb,OAAO;GACL,SAAS;GACT,MAAM;GACP,EACF,CAAC,CACH;AACD;;AAGF,SAAQ,IAAI;EACV;EACA;EACA,SAASA,+BAAe,IAAI,QAAQ;EACpC,MAAM;EACN,UAAU;GAAE,QAAQ;GAAK;GAAS;EACnC,CAAC;CAEF,MAAM,IAAI,SAAS;AAGnB,KAFmB,mBAAmB,kBAAkB,EAAE,SAAS,QAAQ,EAAE,YAAY,MAEzE;AACd,MAAI,UAAU,KAAK,EAAE,gBAAgB,oBAAoB,CAAC;AAC1D,MAAI,IACF,KAAK,UAAU;GACb,MAAM;GACN,UAAU,EAAE,YAAY;GACxB,UAAU,EAAE,YAAY;GACxB,MAAM,EAAE;GACR,OAAO,EAAE,SAAS,EAAE;GACpB,UAAU,EAAE,YAAY,EAAE;GAC3B,CAAC,CACH;QACI;AACL,MAAI,UAAU,KAAK,EAAE,gBAAgB,oBAAoB,CAAC;AAC1D,MAAI,IAAI,KAAK,UAAU,EAAE,MAAM,EAAE,MAAM,CAAC,CAAC"}