import client from "./client";
import type { TestTemplate, TestTemplateSummary } from "../types/models";

// ── Filters ────────────────────────────────────────────────────────

export interface TemplateFilters {
  source?: string;
  platform?: string;
  severity?: string;
  mitre_technique_id?: string;
  search?: string;
  is_active?: boolean;
  offset?: number;
  limit?: number;
}

// ── Create payload ─────────────────────────────────────────────────

export interface CreateTemplatePayload {
  mitre_technique_id: string;
  name: string;
  description?: string;
  source?: string;
  source_url?: string;
  attack_procedure?: string;
  expected_detection?: string;
  platform?: string;
  tool_suggested?: string;
  severity?: string;
  atomic_test_id?: string;
}

// ── Import response ────────────────────────────────────────────────

export interface ImportAtomicResponse {
  message: string;
  imported: number;
  skipped: number;
  total_parsed: number;
}

// ── List (paginated, filtered) ─────────────────────────────────────

/** Fetch a paginated, filtered list of test templates. */
export async function getTemplates(
  filters?: TemplateFilters,
): Promise<TestTemplateSummary[]> {
  const params = new URLSearchParams();
  if (filters?.source) params.append("source", filters.source);
  if (filters?.platform) params.append("platform", filters.platform);
  if (filters?.severity) params.append("severity", filters.severity);
  if (filters?.mitre_technique_id)
    params.append("mitre_technique_id", filters.mitre_technique_id);
  if (filters?.search) params.append("search", filters.search);
  // Default to active-only for catalog; admin uses getAllTemplates without this filter
  params.append("is_active", filters?.is_active !== undefined ? String(filters.is_active) : "true");
  if (filters?.offset !== undefined)
    params.append("offset", String(filters.offset));
  if (filters?.limit !== undefined)
    params.append("limit", String(filters.limit));

  const { data } = await client.get<TestTemplateSummary[]>(
    `/test-templates${params.toString() ? `?${params}` : ""}`,
  );
  return data;
}

/** Total count of templates matching the same filters as getTemplates() — for pagination. */
export async function getTemplateCount(
  filters?: Omit<TemplateFilters, "offset" | "limit">,
): Promise<number> {
  const params = new URLSearchParams();
  if (filters?.source) params.append("source", filters.source);
  if (filters?.platform) params.append("platform", filters.platform);
  if (filters?.severity) params.append("severity", filters.severity);
  if (filters?.mitre_technique_id)
    params.append("mitre_technique_id", filters.mitre_technique_id);
  if (filters?.search) params.append("search", filters.search);
  params.append("is_active", filters?.is_active !== undefined ? String(filters.is_active) : "true");

  const { data } = await client.get<{ total: number }>(
    `/test-templates/count${params.toString() ? `?${params}` : ""}`,
  );
  return data.total;
}

// ── Detail ─────────────────────────────────────────────────────────

/** Fetch a single test template by ID. */
export async function getTemplateById(id: string): Promise<TestTemplate> {
  const { data } = await client.get<TestTemplate>(`/test-templates/${id}`);
  return data;
}

// ── By technique ───────────────────────────────────────────────────

/** Fetch all templates mapped to a specific MITRE technique. */
export async function getTemplatesByTechnique(
  mitreId: string,
): Promise<TestTemplateSummary[]> {
  const { data } = await client.get<TestTemplateSummary[]>(
    `/test-templates/by-technique/${mitreId}`,
  );
  return data;
}

// ── Create (admin) ─────────────────────────────────────────────────

/** Create a custom test template. Admin only. */
export async function createTemplate(
  payload: CreateTemplatePayload,
): Promise<TestTemplate> {
  const { data } = await client.post<TestTemplate>(
    "/test-templates",
    payload,
  );
  return data;
}

// ── Update (admin) ────────────────────────────────────────────────

/** Update fields of an existing test template. Admin/lead only. */
export async function updateTemplate(
  id: string,
  payload: Partial<CreateTemplatePayload>,
): Promise<TestTemplate> {
  const { data } = await client.patch<TestTemplate>(`/test-templates/${id}`, payload);
  return data;
}

// ── Stats (admin) ──────────────────────────────────────────────────

export interface TemplateStats {
  total: number;
  active: number;
  inactive: number;
  by_source: Record<string, number>;
  by_platform: Record<string, number>;
}

/** Fetch template catalog statistics. Admin only. */
export async function getTemplateStats(): Promise<TemplateStats> {
  const { data } = await client.get<TemplateStats>("/test-templates/stats");
  return data;
}

// ── Toggle active (admin) ──────────────────────────────────────────

/** Toggle a template between active/inactive. Admin only. */
export async function toggleTemplateActive(
  id: string,
): Promise<TestTemplate> {
  const { data } = await client.patch<TestTemplate>(
    `/test-templates/${id}/toggle-active`,
  );
  return data;
}

// ── All templates (include inactive, for admin) ────────────────────

/** Fetch all templates including inactive ones (for admin management).
 *  Does NOT filter by is_active so the backend returns all templates. */
export async function getAllTemplates(
  filters?: TemplateFilters,
): Promise<TestTemplate[]> {
  const params = new URLSearchParams();
  if (filters?.source) params.append("source", filters.source);
  if (filters?.platform) params.append("platform", filters.platform);
  if (filters?.search) params.append("search", filters.search);
  if (filters?.offset !== undefined) params.append("offset", String(filters.offset));
  if (filters?.limit !== undefined) params.append("limit", String(filters.limit));
  // Explicitly don't pass is_active so backend returns ALL templates

  const { data } = await client.get<TestTemplate[]>(
    `/test-templates${params.toString() ? `?${params}` : ""}`,
  );
  return data;
}

// ── Bulk activate/deactivate (admin) ──────────────────────────────

export interface BulkActivateResponse {
  detail: string;
  affected: number;
  is_active: boolean;
}

/** Activate or deactivate all templates. Admin only. */
export async function bulkActivateTemplates(
  activate: boolean,
): Promise<BulkActivateResponse> {
  const { data } = await client.patch<BulkActivateResponse>(
    `/test-templates/bulk-activate?activate=${activate}`,
  );
  return data;
}

// ── Import Atomic Red Team ─────────────────────────────────────────

/** Trigger Atomic Red Team import. Admin only. */
export async function importAtomicTests(): Promise<ImportAtomicResponse> {
  const { data } = await client.post<ImportAtomicResponse>(
    "/system/import-atomic-tests",
  );
  return data;
}