import type {
  CampaignPack,
  CustomWorldProfile,
  ScenarioPack,
} from '../../types';
import { buildActPlan } from './actPlanner';
import { resolveCampaignState } from './campaignDirector';

function slugify(value: string) {
  const ascii = value
    .trim()
    .toLowerCase()
    .replace(/[^a-z0-9\u4e00-\u9fa5]+/giu, '-')
    .replace(/^-+|-+$/g, '');
  return ascii || 'campaign';
}

export function buildCampaignPack(params: {
  scenarioPackId: string;
  profile: CustomWorldProfile;
  authoringStyle?: string;
}) {
  const { scenarioPackId, profile, authoringStyle = 'classic_story_rpg' } = params;
  const campaignStateSeed = resolveCampaignState({
    state: {
      customWorldProfile: profile,
      chapterState: null,
      storyEngineMemory: {
        activeThreadIds:
          profile.storyGraph?.visibleThreads.slice(0, 3).map((thread) => thread.id) ?? [],
      },
    } as never,
  });
  const actTemplates = buildActPlan({
    state: {
      customWorldProfile: profile,
      storyEngineMemory: {
        activeThreadIds:
          profile.storyGraph?.visibleThreads.slice(0, 3).map((thread) => thread.id) ?? [],
      },
    } as never,
  });

  return {
    id: profile.campaignPackId ?? `campaign-pack:${slugify(profile.name)}`,
    scenarioPackId,
    title: `${profile.name} 主战役`,
    authoringStyle,
    campaignStateSeed,
    actTemplates,
    requiredCompanionIds: profile.playableNpcs.slice(0, 2).map((npc) => npc.id),
  } satisfies CampaignPack;
}

export function compileCampaignFromWorldProfile(params: {
  profile: CustomWorldProfile;
}) {
  const scenarioPack: ScenarioPack = {
    id: params.profile.scenarioPackId ?? `scenario-pack:${slugify(params.profile.name)}`,
    title: `${params.profile.name} Scenario Pack`,
    version: '0.1.0',
    worldPackIds: [params.profile.id],
    campaignIds: [],
    sharedConstraintPackIds: [],
  };
  const campaignPack = buildCampaignPack({
    scenarioPackId: scenarioPack.id,
    profile: params.profile,
  });

  return {
    scenarioPack: {
      ...scenarioPack,
      campaignIds: [campaignPack.id],
      sharedConstraintPackIds: [campaignPack.id],
    },
    campaignPack,
  };
}