"use server";

import { updateTag } from "next/cache";
import * as z from "zod";

import { GLOSSARY_CACHE_TAG, pageCacheTag } from "@/lib/cache/tags";
import {
  createGlossaryAlias,
  deleteGlossaryAlias,
} from "@/lib/glossary-repository";
import { requireAdmin } from "@/lib/auth/server";
import { publicGuideSections } from "@/lib/guides/public-sections";
import { publicationIssues } from "@/lib/guides/publication";
import { getAdminGuideContentById } from "@/lib/guides/queries";
import {
  createExtraSection,
  createGuide,
  deleteExtraSection,
  GuideVersionConflictError,
  permanentlyDeleteGuide,
  reorderExtraSections,
  restoreGuide,
  saveArtifacts,
  saveConstellations,
  saveExtraSection,
  saveTeams,
  setGuideVisibility,
  saveWeapons,
  trashGuide,
  updateGuideBasics,
} from "@/lib/guides/mutations";
import {
  cancelCatalogSyncJob,
  getCatalogSyncJob,
  startCatalogSyncJob,
} from "@/lib/catalog/sync";
import {
  getAdminTeamImportGuide,
  listAdminTeamImportGuides,
} from "@/lib/guides/queries";

type GuideActionResult =
  | { status: "saved"; version?: number; location?: string }
  | { status: "conflict"; currentVersion: number; message: string }
  | { status: "error"; message: string };

type CreateGuideActionResult = Exclude<GuideActionResult, { status: "conflict" }>;
type SaveIntent = { overwrite?: boolean };

function overwriteDetails(admin: Awaited<ReturnType<typeof requireAdmin>>, intent?: SaveIntent) {
  return intent?.overwrite
    ? { operation: "overwrite" as const, actorName: (admin.user.name?.trim() || admin.user.email).slice(0, 100) }
    : undefined;
}

async function runGuideAction(action: () => Promise<{ version?: number }>): Promise<GuideActionResult> {
  try {
    const result = await action();
    return { status: "saved", version: result.version };
  } catch (cause) {
    if (cause instanceof GuideVersionConflictError) {
      return { status: "conflict", currentVersion: cause.currentVersion, message: cause.message };
    }
    if (cause instanceof z.ZodError) {
      return { status: "error", message: cause.issues.map((issue) => issue.message).join(" • ") };
    }
    return { status: "error", message: cause instanceof Error ? cause.message : "บันทึกไม่สำเร็จ" };
  }
}

export async function createStructuredGuide(input: unknown): Promise<CreateGuideActionResult> {
  await requireAdmin();
  try {
    const guide = await createGuide(input);
    return { status: "saved", version: guide.version, location: `/admin/${guide.characterKey}` };
  } catch (cause) {
    return { status: "error", message: cause instanceof Error ? cause.message : "สร้าง Guide ไม่สำเร็จ" };
  }
}

export async function saveWeaponSection(guideId: string, input: unknown, intent?: SaveIntent) {
  const admin = await requireAdmin();
  return runGuideAction(() => saveWeapons(guideId, input, overwriteDetails(admin, intent)));
}

export async function saveGuideOverview(guideId: string, input: unknown, intent?: SaveIntent) {
  const admin = await requireAdmin();
  return runGuideAction(() => updateGuideBasics(guideId, input, overwriteDetails(admin, intent)));
}

export async function saveArtifactSection(guideId: string, input: unknown, intent?: SaveIntent) {
  const admin = await requireAdmin();
  return runGuideAction(() => saveArtifacts(guideId, input, overwriteDetails(admin, intent)));
}

export async function saveConstellationSection(guideId: string, input: unknown, intent?: SaveIntent) {
  const admin = await requireAdmin();
  return runGuideAction(() => saveConstellations(guideId, input, overwriteDetails(admin, intent)));
}

export async function saveTeamSection(guideId: string, input: unknown, intent?: SaveIntent) {
  const admin = await requireAdmin();
  return runGuideAction(() => saveTeams(guideId, input, overwriteDetails(admin, intent)));
}

export async function listTeamImportGuides(currentGuideId: string) {
  await requireAdmin();
  const parsed = z.string().uuid().safeParse(currentGuideId);
  if (!parsed.success) return { status: "error" as const, message: "Guide ID ไม่ถูกต้อง" };
  try {
    return { status: "success" as const, guides: await listAdminTeamImportGuides(parsed.data) };
  } catch {
    return { status: "error" as const, message: "โหลดรายการ Guide ไม่สำเร็จ" };
  }
}

export async function loadTeamImportGuide(guideId: string) {
  await requireAdmin();
  const parsed = z.string().uuid().safeParse(guideId);
  if (!parsed.success) return { status: "error" as const, message: "Guide ID ไม่ถูกต้อง" };
  try {
    const guide = await getAdminTeamImportGuide(parsed.data);
    return guide
      ? { status: "success" as const, guide }
      : { status: "error" as const, message: "ไม่พบ Guide นี้" };
  } catch {
    return { status: "error" as const, message: "โหลด Team จาก Guide ไม่สำเร็จ" };
  }
}

export async function createGuideExtra(guideId: string, input: unknown) {
  await requireAdmin();
  try {
    const section = await createExtraSection(z.string().uuid().parse(guideId), input);
    updateTag(pageCacheTag(guideId));
    return {
      status: "saved" as const,
      version: section.version,
      section: { id: section.id, slug: section.slug, title: section.title },
    };
  } catch (cause) {
    return {
      status: "error" as const,
      message: cause instanceof z.ZodError
        ? cause.issues.map((issue) => issue.message).join(" • ")
        : cause instanceof Error
          ? cause.message
          : "สร้าง Extra section ไม่สำเร็จ",
    };
  }
}

export async function saveGuideExtra(
  guideId: string,
  sectionId: string,
  input: unknown,
  intent?: SaveIntent,
) {
  const admin = await requireAdmin();
  const parsedGuideId = z.string().uuid().parse(guideId);
  const parsedSectionId = z.string().uuid().parse(sectionId);
  const result = await runGuideAction(() =>
    saveExtraSection(parsedGuideId, parsedSectionId, input, overwriteDetails(admin, intent)),
  );
  if (result.status === "saved") updateTag(pageCacheTag(guideId));
  return result;
}

export async function deleteGuideExtra(guideId: string, sectionId: string) {
  await requireAdmin();
  const result = await runGuideAction(() =>
    deleteExtraSection(
      z.string().uuid().parse(guideId),
      z.string().uuid().parse(sectionId),
    ),
  );
  if (result.status === "saved") updateTag(pageCacheTag(guideId));
  return result;
}

export async function reorderGuideExtras(guideId: string, input: unknown) {
  await requireAdmin();
  const result = await runGuideAction(() =>
    reorderExtraSections(z.string().uuid().parse(guideId), input),
  );
  if (result.status === "saved") updateTag(pageCacheTag(guideId));
  return result;
}

export async function moveGuideToTrash(guideId: string) {
  await requireAdmin();
  return runGuideAction(() => trashGuide(guideId));
}

export async function restoreStructuredGuide(guideId: string) {
  await requireAdmin();
  return runGuideAction(() => restoreGuide(guideId));
}

export async function setStructuredGuideVisibility(
  guideId: string,
  input: unknown,
) {
  await requireAdmin();
  const parsed = z.strictObject({
    isPublic: z.boolean(),
    expectedVersion: z.number().int().positive(),
  }).safeParse(input);
  if (!parsed.success) return { status: "error" as const, message: "ข้อมูลการเผยแพร่ไม่ถูกต้อง" };
  if (!parsed.data.isPublic) {
    return runGuideAction(() => setGuideVisibility(guideId, parsed.data));
  }

  const guide = await getAdminGuideContentById(guideId);
  const issues = publicationIssues({
    exists: Boolean(guide),
    overview: guide?.overview ?? "",
    coverReady: guide?.coverStatus === "ready",
    renderableSectionCount: guide ? publicGuideSections(guide).length : 0,
    version: guide?.version ?? 0,
    expectedVersion: parsed.data.expectedVersion,
  });
  if (issues.length) {
    return { status: "error" as const, message: issues.join(" • "), issues };
  }
  return runGuideAction(() => setGuideVisibility(guideId, parsed.data));
}

export async function deleteStructuredGuide(guideId: string) {
  await requireAdmin();
  return runGuideAction(() => permanentlyDeleteGuide(guideId));
}

export async function startCatalogSync() {
  await requireAdmin();
  try {
    return { status: "started" as const, job: await startCatalogSyncJob() };
  } catch (cause) {
    return { status: "error" as const, message: cause instanceof Error ? cause.message : "เริ่ม Sync ไม่สำเร็จ" };
  }
}

export async function getCatalogSyncProgress(jobId: string) {
  await requireAdmin();
  return getCatalogSyncJob(jobId);
}

export async function cancelCatalogSync(jobId: string) {
  await requireAdmin();
  return cancelCatalogSyncJob(jobId);
}

export async function addGlossaryAlias(input: unknown) {
  await requireAdmin();
  try {
    const alias = await createGlossaryAlias(input);
    updateTag(GLOSSARY_CACHE_TAG);
    return { status: "saved" as const, alias };
  } catch (cause) {
    const message = cause instanceof Error && cause.message.includes("unique")
      ? "Shortcut นี้ถูกใช้งานแล้ว"
      : cause instanceof z.ZodError
        ? cause.issues.map((issue) => issue.message).join(" • ")
        : cause instanceof Error
          ? cause.message
          : "เพิ่ม Shortcut ไม่สำเร็จ";
    return { status: "error" as const, message };
  }
}

export async function removeGlossaryAlias(id: string) {
  await requireAdmin();
  try {
    await deleteGlossaryAlias(z.string().uuid().parse(id));
    updateTag(GLOSSARY_CACHE_TAG);
    return { status: "saved" as const };
  } catch (cause) {
    return {
      status: "error" as const,
      message: cause instanceof Error ? cause.message : "ลบ Shortcut ไม่สำเร็จ",
    };
  }
}