import { afterAll, beforeEach, describe, expect, it } from "vitest";
import postgres from "postgres";
import * as repo from "../server/utils/repo";

const sql = postgres(process.env.DATABASE_URL!, { max: 1, onnotice: () => {} });

beforeEach(async () => {
  await sql`truncate lists cascade`;
});

afterAll(async () => {
  await sql.end();
});

describe("lists", () => {
  it("full-replace upserts supplied and deletes missing", async () => {
    await repo.replaceLists(sql, [
      { id: "a", name: "A" },
      { id: "b", name: "B" },
    ]);
    await repo.replaceLists(sql, [{ id: "a", name: "A2" }]); // b removed, a renamed
    const got = await repo.getLists(sql);
    expect(got).toEqual([{ id: "a", name: "A2" }]);
  });

  it("empty payload clears all lists", async () => {
    await repo.replaceLists(sql, [{ id: "a", name: "A" }]);
    await repo.replaceLists(sql, []);
    expect(await repo.getLists(sql)).toEqual([]);
  });

  it("deleting a list cascades its tasks", async () => {
    await repo.replaceLists(sql, [{ id: "a", name: "A" }]);
    await repo.upsertDesktopTask(sql, "t1", { listId: "a", title: "x" });
    await repo.replaceLists(sql, []); // removes a + cascades t1
    expect(await repo.getUnconsumed(sql)).toEqual([]);
  });

  it("listExists validates listId", async () => {
    await repo.replaceLists(sql, [{ id: "L", name: "List" }]);
    expect(await repo.listExists(sql, "L")).toBe(true);
    expect(await repo.listExists(sql, "ghost")).toBe(false);
  });
});

describe("tasks", () => {
  beforeEach(async () => {
    await repo.replaceLists(sql, [{ id: "L", name: "List" }]);
  });

  it("web create returns generated GUID, source=web, consumed=false", async () => {
    const t = await repo.createWebTask(sql, { listId: "L", title: "buy milk", description: null });
    expect(t.id).toMatch(/^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/);
    expect(t.source).toBe("web");
    expect(t.consumed).toBe(false);
    expect(t.title).toBe("buy milk");
  });

  it("desktop upsert is idempotent by id; source=desktop on insert", async () => {
    const a = await repo.upsertDesktopTask(sql, "fixed-id", { listId: "L", title: "one" });
    expect(a.created).toBe(true);
    const b = await repo.upsertDesktopTask(sql, "fixed-id", { listId: "L", title: "two", description: "d" });
    expect(b.created).toBe(false);
    const tasks = await repo.getTasksForList(sql, "L");
    expect(tasks).toHaveLength(1);
    expect(tasks[0].title).toBe("two");
    expect(tasks[0].description).toBe("d");
    expect(tasks[0].source).toBe("desktop");
  });

  it("getUnconsumed returns only web tasks with consumed=false", async () => {
    await repo.createWebTask(sql, { listId: "L", title: "web1", description: null });
    await repo.upsertDesktopTask(sql, "d1", { listId: "L", title: "desk1" });
    const u = await repo.getUnconsumed(sql);
    expect(u).toHaveLength(1);
    expect(u[0].title).toBe("web1");
  });

  it("consume sets consumed=true and is reflected in getUnconsumed", async () => {
    const t = await repo.createWebTask(sql, { listId: "L", title: "c", description: null });
    expect(await repo.consume(sql, t.id)).toBe(true);
    expect(await repo.getUnconsumed(sql)).toEqual([]);
  });

  it("consume on unknown id returns false", async () => {
    expect(await repo.consume(sql, "nope")).toBe(false);
  });

  it("deleteTask is idempotent", async () => {
    const t = await repo.createWebTask(sql, { listId: "L", title: "c", description: null });
    await repo.deleteTask(sql, t.id);
    await repo.deleteTask(sql, t.id); // no throw on absent
    expect(await repo.getTasksForList(sql, "L")).toEqual([]);
  });
});