import { CommonModule } from '@angular/common';
import { Component } from '@angular/core';
import { FormsModule } from '@angular/forms';

interface SessionDetail {
  session: { code: string; status: string; current_round: number };
  round_question: { id: number; prompt: string; answers: Array<{ text: string }> } | null;
}

@Component({
  selector: 'app-player-shell',
  standalone: true,
  imports: [CommonModule, FormsModule],
  template: `
    <h2>Player SPA gameplay flow</h2>

    <div class="panel">
      <label>Session code <input [(ngModel)]="sessionCode" /></label>
      <label>Nickname <input [(ngModel)]="nickname" /></label>
      <button (click)="refreshSession()" [disabled]="loading">Refresh</button>
      <button (click)="joinSession()" [disabled]="loading">Join</button>
    </div>

    <div class="panel" *ngIf="session">
      <p><strong>Status:</strong> {{ session.session.status }}</p>
      <p *ngIf="session.round_question"><strong>Prompt:</strong> {{ session.round_question.prompt }}</p>

      <label>Løgn <input [(ngModel)]="lieText" [disabled]="loading || session.session.status !== 'lie'" /></label>
      <button (click)="submitLie()" [disabled]="loading || session.session.status !== 'lie'">Submit lie</button>
      <button *ngIf="submitError?.kind === 'lie'" (click)="submitLie()" [disabled]="loading">Retry lie submit</button>

      <div class="answers" *ngIf="session.round_question?.answers?.length">
        <button
          type="button"
          *ngFor="let answer of session.round_question?.answers"
          (click)="selectedGuess = answer.text"
          [class.active]="selectedGuess === answer.text"
          [disabled]="loading || session.session.status !== 'guess'"
        >
          {{ answer.text }}
        </button>
      </div>

      <button (click)="submitGuess()" [disabled]="loading || session.session.status !== 'guess' || !selectedGuess">Submit guess</button>
      <button *ngIf="submitError?.kind === 'guess'" (click)="submitGuess()" [disabled]="loading">Retry guess submit</button>
    </div>

    <p *ngIf="error" class="error">{{ error }}</p>
    <p *ngIf="submitError" class="error">{{ submitError.message }}</p>
  `,
})
export class PlayerShellComponent {
  sessionCode = '';
  nickname = '';
  playerId = 0;
  sessionToken = '';
  lieText = '';
  selectedGuess = '';
  loading = false;
  error = '';
  submitError: { kind: 'lie' | 'guess'; message: string } | null = null;
  session: SessionDetail | null = null;

  private normalizeCode(value: string): string {
    return value.trim().toUpperCase();
  }

  private async request<T>(path: string, method: 'GET' | 'POST', payload?: unknown): Promise<T> {
    const response = await fetch(path, {
      method,
      headers: {
        Accept: 'application/json',
        ...(payload === undefined ? {} : { 'Content-Type': 'application/json' }),
      },
      ...(payload === undefined ? {} : { body: JSON.stringify(payload) }),
      credentials: 'same-origin',
    });

    const body = await response.json().catch(() => ({}));
    if (!response.ok) {
      throw new Error((body as { error?: string }).error ?? `HTTP ${response.status}`);
    }

    return body as T;
  }

  async refreshSession(): Promise<void> {
    this.loading = true;
    this.error = '';
    try {
      const code = this.normalizeCode(this.sessionCode);
      this.session = await this.request<SessionDetail>(`/lobby/sessions/${encodeURIComponent(code)}`, 'GET');
      this.sessionCode = this.session.session.code;
      if (this.session.session.status !== 'guess') {
        this.selectedGuess = '';
      }
    } catch (error) {
      this.error = `Session refresh failed: ${(error as Error).message}`;
    } finally {
      this.loading = false;
    }
  }

  async joinSession(): Promise<void> {
    this.loading = true;
    this.error = '';
    try {
      const payload = await this.request<{
        player: { id: number; session_token: string };
        session: { code: string };
      }>('/lobby/sessions/join', 'POST', {
        code: this.normalizeCode(this.sessionCode),
        nickname: this.nickname.trim(),
      });
      this.playerId = payload.player.id;
      this.sessionToken = payload.player.session_token;
      this.sessionCode = payload.session.code;
      await this.refreshSession();
    } catch (error) {
      this.error = `Join failed: ${(error as Error).message}`;
    } finally {
      this.loading = false;
    }
  }

  async submitLie(): Promise<void> {
    if (!this.session?.round_question?.id) {
      return;
    }
    this.loading = true;
    this.submitError = null;
    try {
      await this.request(
        `/lobby/sessions/${encodeURIComponent(this.normalizeCode(this.sessionCode))}/questions/${this.session.round_question.id}/lies/submit`,
        'POST',
        {
          player_id: this.playerId,
          session_token: this.sessionToken,
          text: this.lieText,
        }
      );
      await this.refreshSession();
    } catch (error) {
      this.submitError = { kind: 'lie', message: `Lie submit failed: ${(error as Error).message}` };
    } finally {
      this.loading = false;
    }
  }

  async submitGuess(): Promise<void> {
    if (!this.session?.round_question?.id || !this.selectedGuess) {
      return;
    }
    this.loading = true;
    this.submitError = null;
    try {
      await this.request(
        `/lobby/sessions/${encodeURIComponent(this.normalizeCode(this.sessionCode))}/questions/${this.session.round_question.id}/guesses/submit`,
        'POST',
        {
          player_id: this.playerId,
          session_token: this.sessionToken,
          selected_text: this.selectedGuess,
        }
      );
      await this.refreshSession();
    } catch (error) {
      this.submitError = { kind: 'guess', message: `Guess submit failed: ${(error as Error).message}` };
    } finally {
      this.loading = false;
    }
  }
}