import type Database from "bun:sqlite";

import { describe, expect, test } from "bun:test";

import type { Entity, RuntimeMode } from "../../../src/shared/api";

import { createProject } from "../../../src/server/db/projects";
import { createNoopLogger } from "../../../src/server/logger";
import { createMigratedMemoryTestDatabase } from "../../helpers";

const MODE: RuntimeMode = "test";
const LOG = createNoopLogger();

async function createEntityViaHandler(req: Request, db: Database): Promise<Response> {
  const { handleCreateEntity: h } = await import("../../../src/server/routes/entities/create");
  return h(req, db, MODE, LOG);
}

async function listEntitiesViaHandler(req: Request, db: Database): Promise<Response> {
  const { handleListEntities: h } = await import("../../../src/server/routes/entities/list");
  return h(req, db, MODE, LOG);
}

async function getEntityViaHandler(req: Request, db: Database): Promise<Response> {
  const { handleGetEntity: h } = await import("../../../src/server/routes/entities/get");
  return h(req, db, MODE, LOG);
}

async function updateEntityViaHandler(req: Request, db: Database): Promise<Response> {
  const { handleUpdateEntity: h } = await import("../../../src/server/routes/entities/update");
  return h(req, db, MODE, LOG);
}

async function deleteEntityViaHandler(req: Request, db: Database): Promise<Response> {
  const { handleDeleteEntity: h } = await import("../../../src/server/routes/entities/delete");
  return h(req, db, MODE, LOG);
}

async function withRouteDb(callback: (db: Database) => Promise<void>): Promise<void> {
  const handle = createMigratedMemoryTestDatabase("entity-route-test");
  try {
    await callback(handle.db);
    handle.close();
  } finally {
    handle.cleanup();
  }
}

function createTestProject(db: Database) {
  const result = createProject(db, { name: "测试项目" }, LOG);
  if ("error" in result) throw new Error(result.error);
  return result.project;
}

describe("实体 API 路由", () => {
  describe("POST /api/projects/:id/entities", () => {
    test("正常创建实体", async () => {
      await withRouteDb(async (db) => {
        const project = createTestProject(db);
        const req = new Request(`http://localhost/api/projects/${project.id}/entities`, {
          body: JSON.stringify({ name: "张三", type: "person", description: "描述", aliases: ["小张"] }),
          headers: { "Content-Type": "application/json" },
          method: "POST",
        });
        const res = await createEntityViaHandler(req, db);
        expect(res.status).toBe(201);
        const body = (await res.json()) as { entity: Entity };
        expect(body.entity.name).toBe("张三");
        expect(body.entity.type).toBe("person");
        expect(body.entity.aliases).toEqual(["小张"]);
      });
    });

    test("无 name 返回 400", async () => {
      await withRouteDb(async (db) => {
        const project = createTestProject(db);
        const req = new Request(`http://localhost/api/projects/${project.id}/entities`, {
          body: JSON.stringify({ type: "other" }),
          headers: { "Content-Type": "application/json" },
          method: "POST",
        });
        const res = await createEntityViaHandler(req, db);
        expect(res.status).toBe(400);
      });
    });
  });

  describe("GET /api/projects/:id/entities", () => {
    test("分页列出实体", async () => {
      await withRouteDb(async (db) => {
        const project = createTestProject(db);
        const req1 = new Request(`http://localhost/api/projects/${project.id}/entities`, {
          body: JSON.stringify({ name: "实体1", type: "person" }),
          headers: { "Content-Type": "application/json" },
          method: "POST",
        });
        await createEntityViaHandler(req1, db);

        const req = new Request(`http://localhost/api/projects/${project.id}/entities?page=1&pageSize=10`, {
          method: "GET",
        });
        const res = await listEntitiesViaHandler(req, db);
        expect(res.status).toBe(200);
        const body = (await res.json()) as { items: Entity[]; total: number };
        expect(body.total).toBe(1);
      });
    });

    test("按类型筛选", async () => {
      await withRouteDb(async (db) => {
        const project = createTestProject(db);
        const req1 = new Request(`http://localhost/api/projects/${project.id}/entities`, {
          body: JSON.stringify({ name: "人", type: "person" }),
          headers: { "Content-Type": "application/json" },
          method: "POST",
        });
        await createEntityViaHandler(req1, db);
        const req2 = new Request(`http://localhost/api/projects/${project.id}/entities`, {
          body: JSON.stringify({ name: "公司", type: "organization" }),
          headers: { "Content-Type": "application/json" },
          method: "POST",
        });
        await createEntityViaHandler(req2, db);

        const req = new Request(`http://localhost/api/projects/${project.id}/entities?type=person`, { method: "GET" });
        const res = await listEntitiesViaHandler(req, db);
        const body = (await res.json()) as { items: Entity[]; total: number };
        expect(body.total).toBe(1);
        const firstItem = body.items[0]!;
        expect(firstItem.name).toBe("人");
      });
    });
  });

  describe("GET /api/projects/:id/entities/:eid", () => {
    test("获取实体详情", async () => {
      await withRouteDb(async (db) => {
        const project = createTestProject(db);
        const createReq = new Request(`http://localhost/api/projects/${project.id}/entities`, {
          body: JSON.stringify({ name: "张三", type: "person" }),
          headers: { "Content-Type": "application/json" },
          method: "POST",
        });
        const createRes = await createEntityViaHandler(createReq, db);
        const created = (await createRes.json()) as { entity: Entity };

        const req = new Request(`http://localhost/api/projects/${project.id}/entities/${created.entity.id}`, {
          method: "GET",
        });
        const res = await getEntityViaHandler(req, db);
        expect(res.status).toBe(200);
        const body = (await res.json()) as { entity: Entity };
        expect(body.entity.name).toBe("张三");
      });
    });

    test("不存在的实体返回 404", async () => {
      await withRouteDb(async (db) => {
        const project = createTestProject(db);
        const req = new Request(`http://localhost/api/projects/${project.id}/entities/nonexistent`, { method: "GET" });
        const res = await getEntityViaHandler(req, db);
        expect(res.status).toBe(404);
      });
    });
  });

  describe("PATCH /api/projects/:id/entities/:eid", () => {
    test("更新实体名称", async () => {
      await withRouteDb(async (db) => {
        const project = createTestProject(db);
        const createReq = new Request(`http://localhost/api/projects/${project.id}/entities`, {
          body: JSON.stringify({ name: "张三", type: "person" }),
          headers: { "Content-Type": "application/json" },
          method: "POST",
        });
        const createRes = await createEntityViaHandler(createReq, db);
        const created = (await createRes.json()) as { entity: Entity };

        const req = new Request(`http://localhost/api/projects/${project.id}/entities/${created.entity.id}`, {
          body: JSON.stringify({ name: "张三丰" }),
          headers: { "Content-Type": "application/json" },
          method: "PATCH",
        });
        const res = await updateEntityViaHandler(req, db);
        expect(res.status).toBe(200);
        const body = (await res.json()) as { entity: Entity };
        expect(body.entity.name).toBe("张三丰");
      });
    });
  });

  describe("DELETE /api/projects/:id/entities/:eid", () => {
    test("软删除实体", async () => {
      await withRouteDb(async (db) => {
        const project = createTestProject(db);
        const createReq = new Request(`http://localhost/api/projects/${project.id}/entities`, {
          body: JSON.stringify({ name: "张三", type: "person" }),
          headers: { "Content-Type": "application/json" },
          method: "POST",
        });
        const createRes = await createEntityViaHandler(createReq, db);
        const created = (await createRes.json()) as { entity: Entity };

        const deleteReq = new Request(`http://localhost/api/projects/${project.id}/entities/${created.entity.id}`, {
          method: "DELETE",
        });
        const res = await deleteEntityViaHandler(deleteReq, db);
        expect(res.status).toBe(200);

        const getReq = new Request(`http://localhost/api/projects/${project.id}/entities/${created.entity.id}`, {
          method: "GET",
        });
        const getRes = await getEntityViaHandler(getReq, db);
        expect(getRes.status).toBe(404);
      });
    });
  });
});