import { Controller, Get, Param, Post } from '@nestjs/common';
import { DEMO_CHARACTER_ID } from '../demo/demo-character.constants';
import { QuestService } from './quest.service';
import { QuestDto, QuestInteractionResultDto } from './quest.types';

/**
 * The character's quest log (Playable Slice 0.9 §12).
 *
 * The character comes from the session stand-in, never from the request, so a
 * caller cannot read somebody else's quests.
 */
@Controller('quests')
export class QuestController {
  constructor(private readonly questService: QuestService) {}

  @Get()
  getQuestLog(): Promise<QuestDto[]> {
    return this.questService.getQuestLog(DEMO_CHARACTER_ID);
  }
}

/**
 * The two things a player can do to a quest at an NPC (spec §3, §5, §6, §8).
 *
 * Neither route takes a body. Which step is current, what it grants and what it
 * consumes are all the server's to decide (AGENTS.md §5) -- the request only
 * names who is being spoken to and about what.
 *
 * Deliberately not dialogue actions (decision D4): carrying `START_QUEST` out
 * through the dialogue tree would need a response-selection endpoint and an
 * action executor, which is the branching narrative engine §10 rules out.
 */
@Controller('npcs/:npcKey/quests/:questKey')
export class NpcQuestController {
  constructor(private readonly questService: QuestService) {}

  @Post('accept')
  acceptQuest(
    @Param('npcKey') npcKey: string,
    @Param('questKey') questKey: string,
  ): Promise<QuestInteractionResultDto> {
    return this.questService.acceptQuest(DEMO_CHARACTER_ID, npcKey, questKey);
  }

  @Post('advance')
  advanceQuest(
    @Param('npcKey') npcKey: string,
    @Param('questKey') questKey: string,
  ): Promise<QuestInteractionResultDto> {
    return this.questService.advanceQuest(DEMO_CHARACTER_ID, npcKey, questKey);
  }
}