import { Body, Controller, Get, Inject, Param, Post, Query } from "@nestjs/common";
import { VoiceSheetService } from "./voice-sheet.service.js";
import { ProsodyService } from "./prosody.service.js";
import { NonverbalService } from "./nonverbal.service.js";
import { ParalinguisticService, type ParalinguisticFeatures } from "./paralinguistic.service.js";
import { TTS_PROVIDER, type TTSProvider } from "./tts-provider.js";
import { EmotionService } from "../emotion/emotion.service.js";

interface SeedVoiceSheetBody {
  verbalTics?: string[];
  forbiddenSounds?: string[];
}

interface SynthesizeBody {
  text: string;
  now?: string;
  seed?: number;
}

interface AnalyzeInputBody {
  userId: string;
  text: string;
  paralinguistic: ParalinguisticFeatures;
  now?: string;
}

@Controller("voice")
export class VoiceController {
  constructor(
    private readonly voiceSheet: VoiceSheetService,
    private readonly prosody: ProsodyService,
    private readonly nonverbal: NonverbalService,
    private readonly paralinguistic: ParalinguisticService,
    private readonly emotion: EmotionService,
    @Inject(TTS_PROVIDER) private readonly ttsProvider: TTSProvider,
  ) {}

  @Post(":characterId/voice-sheet/seed-default")
  async seedVoiceSheet(@Param("characterId") characterId: string, @Body() body: SeedVoiceSheetBody) {
    return this.voiceSheet.seedDefault(characterId, body);
  }

  @Get(":characterId/voice-sheet")
  async getVoiceSheet(@Param("characterId") characterId: string) {
    return this.voiceSheet.get(characterId);
  }

  @Get(":characterId/:userId/prosody")
  async getProsody(
    @Param("characterId") characterId: string,
    @Param("userId") userId: string,
    @Query("now") now?: string,
  ) {
    return this.prosody.resolveProsody(characterId, userId, now ? new Date(now) : undefined);
  }

  @Get(":characterId/:userId/nonverbal-cue")
  async getNonverbalCue(
    @Param("characterId") characterId: string,
    @Param("userId") userId: string,
    @Query("now") now?: string,
  ) {
    return this.nonverbal.resolveCue(characterId, userId, now ? new Date(now) : undefined);
  }

  @Post(":characterId/:userId/synthesize")
  async synthesize(
    @Param("characterId") characterId: string,
    @Param("userId") userId: string,
    @Body() body: SynthesizeBody,
  ) {
    const now = body.now ? new Date(body.now) : undefined;
    const [voiceSheet, resolvedProsody, nonverbalCue] = await Promise.all([
      this.voiceSheet.getOrSeedDefault(characterId),
      this.prosody.resolveProsody(characterId, userId, now),
      this.nonverbal.resolveCue(characterId, userId, now),
    ]);
    return this.ttsProvider.synthesize({
      text: body.text,
      voiceSheet,
      prosody: resolvedProsody,
      nonverbalCue,
      seed: body.seed,
    });
  }

  // P-5 驗收用端點：同一段文字配不同副語言特徵，應該得到不同的情緒標記結果。
  @Post(":characterId/analyze-input")
  async analyzeInput(@Param("characterId") characterId: string, @Body() body: AnalyzeInputBody) {
    const now = body.now ? new Date(body.now) : new Date();
    const paralinguisticSignal = this.paralinguistic.deriveSignal(body.paralinguistic) ?? undefined;
    const result = await this.emotion.processInput(characterId, body.text, { now, paralinguisticSignal });
    return { ...result, paralinguisticSignal: paralinguisticSignal ?? null };
  }
}