/**
 * Knowledge API Client
 * Handles knowledge entry-related API requests
 */

import type { KnowledgeEntryWithTags, KnowledgeTag } from "@mosaic/shared";
import { EntryStatus } from "@mosaic/shared";
import { apiGet, type ApiResponse } from "./client";

export interface EntryFilters {
  status?: EntryStatus;
  tag?: string;
  page?: number;
  limit?: number;
  search?: string;
  sortBy?: "updatedAt" | "createdAt" | "title";
  sortOrder?: "asc" | "desc";
}

export interface EntriesResponse {
  data: KnowledgeEntryWithTags[];
  meta?: {
    total?: number;
    page?: number;
    limit?: number;
  };
}

/**
 * Fetch knowledge entries with optional filters
 */
export async function fetchEntries(filters?: EntryFilters): Promise<EntriesResponse> {
  const params = new URLSearchParams();

  if (filters?.status) {
    params.append("status", filters.status);
  }
  if (filters?.tag) {
    params.append("tag", filters.tag);
  }
  if (filters?.page) {
    params.append("page", filters.page.toString());
  }
  if (filters?.limit) {
    params.append("limit", filters.limit.toString());
  }

  const queryString = params.toString();
  const endpoint = queryString ? `/api/knowledge/entries?${queryString}` : "/api/knowledge/entries";

  const response = await apiGet<EntriesResponse>(endpoint);
  return response;
}

/**
 * Fetch all knowledge tags
 */
export async function fetchTags(): Promise<KnowledgeTag[]> {
  const response = await apiGet<ApiResponse<KnowledgeTag[]>>("/api/knowledge/tags");
  return response.data;
}

/**
 * Mock entries for development (until backend endpoints are ready)
 */
export const mockEntries: KnowledgeEntryWithTags[] = [
  {
    id: "entry-1",
    workspaceId: "workspace-1",
    slug: "getting-started",
    title: "Getting Started with Mosaic Stack",
    content: "# Getting Started\n\nWelcome to Mosaic Stack...",
    contentHtml: "<h1>Getting Started</h1><p>Welcome to Mosaic Stack...</p>",
    summary: "A comprehensive guide to getting started with the Mosaic Stack platform.",
    status: EntryStatus.PUBLISHED,
    visibility: "PUBLIC" as const,
    createdBy: "user-1",
    updatedBy: "user-1",
    createdAt: new Date("2026-01-20"),
    updatedAt: new Date("2026-01-28"),
    tags: [
      { id: "tag-1", workspaceId: "workspace-1", name: "Tutorial", slug: "tutorial", color: "#3B82F6", createdAt: new Date(), updatedAt: new Date() },
      { id: "tag-2", workspaceId: "workspace-1", name: "Onboarding", slug: "onboarding", color: "#10B981", createdAt: new Date(), updatedAt: new Date() },
    ],
  },
  {
    id: "entry-2",
    workspaceId: "workspace-1",
    slug: "architecture-overview",
    title: "Architecture Overview",
    content: "# Architecture\n\nThe Mosaic Stack architecture...",
    contentHtml: "<h1>Architecture</h1><p>The Mosaic Stack architecture...</p>",
    summary: "Overview of the system architecture and design patterns used in Mosaic Stack.",
    status: EntryStatus.PUBLISHED,
    visibility: "WORKSPACE" as const,
    createdBy: "user-1",
    updatedBy: "user-1",
    createdAt: new Date("2026-01-15"),
    updatedAt: new Date("2026-01-27"),
    tags: [
      { id: "tag-3", workspaceId: "workspace-1", name: "Architecture", slug: "architecture", color: "#8B5CF6", createdAt: new Date(), updatedAt: new Date() },
      { id: "tag-4", workspaceId: "workspace-1", name: "Technical", slug: "technical", color: "#F59E0B", createdAt: new Date(), updatedAt: new Date() },
    ],
  },
  {
    id: "entry-3",
    workspaceId: "workspace-1",
    slug: "api-documentation-draft",
    title: "API Documentation (Draft)",
    content: "# API Docs\n\nWork in progress...",
    contentHtml: "<h1>API Docs</h1><p>Work in progress...</p>",
    summary: "Comprehensive API documentation for developers.",
    status: EntryStatus.DRAFT,
    visibility: "PRIVATE" as const,
    createdBy: "user-1",
    updatedBy: "user-1",
    createdAt: new Date("2026-01-29"),
    updatedAt: new Date("2026-01-29"),
    tags: [
      { id: "tag-4", workspaceId: "workspace-1", name: "Technical", slug: "technical", color: "#F59E0B", createdAt: new Date(), updatedAt: new Date() },
      { id: "tag-5", workspaceId: "workspace-1", name: "API", slug: "api", color: "#EF4444", createdAt: new Date(), updatedAt: new Date() },
    ],
  },
  {
    id: "entry-4",
    workspaceId: "workspace-1",
    slug: "deployment-guide",
    title: "Deployment Guide",
    content: "# Deployment\n\nHow to deploy Mosaic Stack...",
    contentHtml: "<h1>Deployment</h1><p>How to deploy Mosaic Stack...</p>",
    summary: "Step-by-step guide for deploying Mosaic Stack to production.",
    status: EntryStatus.PUBLISHED,
    visibility: "WORKSPACE" as const,
    createdBy: "user-1",
    updatedBy: "user-1",
    createdAt: new Date("2026-01-18"),
    updatedAt: new Date("2026-01-25"),
    tags: [
      { id: "tag-6", workspaceId: "workspace-1", name: "DevOps", slug: "devops", color: "#14B8A6", createdAt: new Date(), updatedAt: new Date() },
      { id: "tag-1", workspaceId: "workspace-1", name: "Tutorial", slug: "tutorial", color: "#3B82F6", createdAt: new Date(), updatedAt: new Date() },
    ],
  },
  {
    id: "entry-5",
    workspaceId: "workspace-1",
    slug: "old-meeting-notes",
    title: "Q4 2025 Meeting Notes",
    content: "# Meeting Notes\n\nOld archived notes...",
    contentHtml: "<h1>Meeting Notes</h1><p>Old archived notes...</p>",
    summary: "Meeting notes from Q4 2025 - archived for reference.",
    status: EntryStatus.ARCHIVED,
    visibility: "PRIVATE" as const,
    createdBy: "user-1",
    updatedBy: "user-1",
    createdAt: new Date("2025-12-15"),
    updatedAt: new Date("2026-01-05"),
    tags: [
      { id: "tag-7", workspaceId: "workspace-1", name: "Meetings", slug: "meetings", color: "#6B7280", createdAt: new Date(), updatedAt: new Date() },
    ],
  },
];

export const mockTags: KnowledgeTag[] = [
  { id: "tag-1", workspaceId: "workspace-1", name: "Tutorial", slug: "tutorial", color: "#3B82F6", createdAt: new Date(), updatedAt: new Date() },
  { id: "tag-2", workspaceId: "workspace-1", name: "Onboarding", slug: "onboarding", color: "#10B981", createdAt: new Date(), updatedAt: new Date() },
  { id: "tag-3", workspaceId: "workspace-1", name: "Architecture", slug: "architecture", color: "#8B5CF6", createdAt: new Date(), updatedAt: new Date() },
  { id: "tag-4", workspaceId: "workspace-1", name: "Technical", slug: "technical", color: "#F59E0B", createdAt: new Date(), updatedAt: new Date() },
  { id: "tag-5", workspaceId: "workspace-1", name: "API", slug: "api", color: "#EF4444", createdAt: new Date(), updatedAt: new Date() },
  { id: "tag-6", workspaceId: "workspace-1", name: "DevOps", slug: "devops", color: "#14B8A6", createdAt: new Date(), updatedAt: new Date() },
  { id: "tag-7", workspaceId: "workspace-1", name: "Meetings", slug: "meetings", color: "#6B7280", createdAt: new Date(), updatedAt: new Date() },
];