import {
  Controller,
  Post,
  Get,
  Body,
  Param,
  UseGuards,
  Req,
  HttpCode,
  HttpStatus,
} from '@nestjs/common';
import { Request } from 'express';
import { TurnCombatService } from './turn-combat.service';
import { SpellSystem } from './spell.system';
import { StartTurnCombatDto } from './dto/start-turn-combat.dto';
import { TurnActionDto } from './dto/turn-action.dto';
import { ChooseDaoPathDto } from './dto/choose-dao-path.dto';
import { UnlockSpellDto } from './dto/unlock-spell.dto';
import { AuthGuard } from '../../auth/guards/auth.guard';
import { User } from '../../user/user.entity';
import { InjectRepository } from '@nestjs/typeorm';
import { Repository } from 'typeorm';
import { Character } from '../../character/entities/character.entity';

@Controller('combat/turn')
@UseGuards(AuthGuard)
export class TurnCombatController {
  constructor(
    private readonly turnCombatService: TurnCombatService,
    private readonly spellSystem: SpellSystem,
    @InjectRepository(Character)
    private readonly characterRepo: Repository<Character>,
  ) {}

  // ---------- Combat tour par tour ----------

  @Post('start')
  @HttpCode(HttpStatus.OK)
  startCombat(
    @Body() dto: StartTurnCombatDto,
    @Req() req: Request & { user: User },
  ) {
    return this.turnCombatService.startSession(dto, req.user);
  }

  @Post('action')
  @HttpCode(HttpStatus.OK)
  submitAction(
    @Body() dto: TurnActionDto,
    @Req() req: Request & { user: User },
  ) {
    return this.turnCombatService.submitAction(
      dto.sessionId,
      { type: dto.type, spellId: dto.spellId, itemId: dto.itemId },
      req.user.id,
    );
  }

  @Get('session/:sessionId')
  getSession(
    @Param('sessionId') sessionId: string,
    @Req() req: Request & { user: User },
  ) {
    return this.turnCombatService.getSession(sessionId, req.user.id);
  }

  // ---------- Dao & Sorts ----------

  @Get('spells')
  getAllSpells() {
    return this.spellSystem.getAllSpells();
  }

  @Get('spells/unlocked')
  async getUnlockedSpells(@Req() req: Request & { user: User }) {
    const character = await this.getCharacter(req.user.id);
    return this.spellSystem.getUnlockedSpells(character.id);
  }

  @Post('spells/unlock')
  @HttpCode(HttpStatus.OK)
  async unlockSpell(
    @Body() dto: UnlockSpellDto,
    @Req() req: Request & { user: User },
  ) {
    const character = await this.getCharacter(req.user.id);
    return this.spellSystem.unlockSpell(character.id, dto.spellId);
  }

  @Get('dao')
  async getDaoPaths(@Req() req: Request & { user: User }) {
    const character = await this.getCharacter(req.user.id);
    return this.spellSystem.getDaoPaths(character.id);
  }

  @Post('dao/choose')
  @HttpCode(HttpStatus.OK)
  async chooseDaoPath(
    @Body() dto: ChooseDaoPathDto,
    @Req() req: Request & { user: User },
  ) {
    const character = await this.getCharacter(req.user.id);
    return this.spellSystem.choosePrimaryPath(character.id, dto.path);
  }

  // ---------- Helper ----------

  private async getCharacter(userId: string): Promise<Character> {
    const character = await this.characterRepo.findOne({
      where: { userId },
    });
    if (!character) {
      throw new Error('Aucun personnage trouve');
    }
    return character;
  }
}