import { computed, inject, Injectable, type Signal } from '@angular/core';
import { LocaleService } from '../i18n/locale.service';
import { type RouteId } from '../routing/route-ids';
import {
  CASE_STUDY_IDS,
  type CaseStudyCopy,
  type CaseStudyId,
  type ContactPageCopy,
  type HomePageCopy,
  type LegalPageCopy,
  type PageCopy,
  type PitchPageCopy,
  type ProjectsPageCopy,
  type ServicesPageCopy,
  type StackPageCopy,
} from './content.contracts';
import { SITE_CONTENT } from './content.token';

@Injectable({ providedIn: 'root' })
export class ContentService {
  private readonly localeService = inject(LocaleService);
  private readonly content = inject(SITE_CONTENT);

  page(routeId: RouteId): Signal<PageCopy> {
    return computed(() => this.content[this.localeService.locale()].pages[routeId]);
  }

  home(): Signal<HomePageCopy> {
    return computed(() => this.content[this.localeService.locale()].home);
  }

  pitch(): Signal<PitchPageCopy> {
    return computed(() => this.content[this.localeService.locale()].pitch);
  }

  services(): Signal<ServicesPageCopy> {
    return computed(() => this.content[this.localeService.locale()].services);
  }

  caseStudy(id: CaseStudyId): Signal<CaseStudyCopy> {
    return computed(() => this.content[this.localeService.locale()].cases[id]);
  }

  cases(): Signal<readonly CaseStudyCopy[]> {
    return computed(() => {
      const cases = this.content[this.localeService.locale()].cases;
      return CASE_STUDY_IDS.map((id) => cases[id]);
    });
  }

  contact(): Signal<ContactPageCopy> {
    return computed(() => this.content[this.localeService.locale()].contact);
  }

  projects(): Signal<ProjectsPageCopy> {
    return computed(() => this.content[this.localeService.locale()].projects);
  }

  stack(): Signal<StackPageCopy> {
    return computed(() => this.content[this.localeService.locale()].stack);
  }

  legal(id: 'imprint' | 'privacy'): Signal<LegalPageCopy> {
    return computed(() => this.content[this.localeService.locale()].legal[id]);
  }
}