import { test, expect, vi } from "vitest";
import { buildApp } from "../src/app.js";
import { loadConfig } from "../src/config.js";

// ---------------------------------------------------------------------------
// SQL routes
// ---------------------------------------------------------------------------

test("POST /sessions/:id/sql/preview returns rows from injected thtRunner stub", async () => {
  const previewResult = {
    columns: ["a"],
    rows: [[1]],
    execution_ms: 2,
    truncated: false,
  };
  const app = buildApp(loadConfig({ THT_HARNESS_DIR: "../harness" }), {
    thtRunner: {
      sqlPreview: async () => previewResult,
    } as any,
  });

  const res = await app.inject({
    method: "POST",
    url: "/sessions/s1/sql/preview",
    payload: { limit: 10, offset: 0 },
  });

  expect(res.statusCode).toBe(200);
  expect(res.json()).toEqual(previewResult);
});

test("POST /sessions/:id/sql/preview passes limit and offset to thtRunner", async () => {
  let captured: any;
  const app = buildApp(loadConfig({ THT_HARNESS_DIR: "../harness" }), {
    thtRunner: {
      sqlPreview: async (id: string, p: any) => {
        captured = { id, ...p };
        return { columns: [], rows: [], execution_ms: 0, truncated: false };
      },
    } as any,
  });

  await app.inject({
    method: "POST",
    url: "/sessions/abc/sql/preview",
    payload: { limit: 25, offset: 50 },
  });

  expect(captured.id).toBe("abc");
  expect(captured.limit).toBe(25);
  expect(captured.offset).toBe(50);
});

test("POST /sessions/:id/sql/export returns {path} from injected thtRunner stub", async () => {
  const app = buildApp(loadConfig({ THT_HARNESS_DIR: "../harness" }), {
    thtRunner: {
      sqlExport: async (_id: string) => ({ path: "/tmp/export.csv" }),
    } as any,
  });

  const res = await app.inject({
    method: "POST",
    url: "/sessions/s1/sql/export",
    payload: {},
  });

  expect(res.statusCode).toBe(200);
  expect(res.json()).toEqual({ path: "/tmp/export.csv" });
});

test("POST /sessions/:id/sql/preview returns 500 when thtRunner throws", async () => {
  const app = buildApp(loadConfig({ THT_HARNESS_DIR: "../harness" }), {
    thtRunner: {
      sqlPreview: async () => { throw new Error("tht boom"); },
    } as any,
  });

  const res = await app.inject({
    method: "POST",
    url: "/sessions/s1/sql/preview",
    payload: {},
  });

  expect(res.statusCode).toBe(500);
  expect(res.json()).toMatchObject({ error: /boom/ });
});

// ---------------------------------------------------------------------------
// Meta routes
// ---------------------------------------------------------------------------

test("GET /workspaces lists yaml files from ../harness/workspaces", async () => {
  // The real ../harness/workspaces directory contains *.yaml files.
  const app = buildApp(loadConfig({ THT_HARNESS_DIR: "../harness" }), {
    thtRunner: {} as any,
  });

  const res = await app.inject({ method: "GET", url: "/workspaces" });

  expect(res.statusCode).toBe(200);
  const body = res.json() as { name: string; file: string }[];
  expect(Array.isArray(body)).toBe(true);
  // ../harness/workspaces has at least one yaml (tht-test.yaml / tht.example.yaml)
  expect(body.length).toBeGreaterThan(0);
  for (const w of body) {
    expect(typeof w.name).toBe("string");
    expect(w.name).not.toContain(".yaml");  // name strips extension
    expect(w.file).toMatch(/\.ya?ml$/);
  }
});

test("GET /workspaces returns [] when harnessDir has no workspaces subdir", async () => {
  const app = buildApp(loadConfig({ THT_HARNESS_DIR: "/nonexistent-harness-dir" }), {
    thtRunner: {} as any,
  });

  const res = await app.inject({ method: "GET", url: "/workspaces" });

  expect(res.statusCode).toBe(200);
  expect(res.json()).toEqual([]);
});

test("GET /models returns {models:[...]} from injected listModels stub", async () => {
  const app = buildApp(loadConfig({ THT_HARNESS_DIR: "../harness" }), {
    thtRunner: {} as any,
    listModels: async () => [
      { provider: "zai", id: "glm-5.2", name: "GLM 5.2", reasoning: true },
    ],
  });

  const res = await app.inject({ method: "GET", url: "/models" });

  expect(res.statusCode).toBe(200);
  expect(res.json()).toEqual({
    models: [{ provider: "zai", id: "glm-5.2", name: "GLM 5.2", reasoning: true }],
  });
});

test("GET /models returns {models:[]} when listModels throws (graceful fallback)", async () => {
  const app = buildApp(loadConfig({ THT_HARNESS_DIR: "../harness" }), {
    thtRunner: {} as any,
    listModels: async () => { throw new Error("Pi not running"); },
  });

  const res = await app.inject({ method: "GET", url: "/models" });

  expect(res.statusCode).toBe(200);
  expect(res.json()).toEqual({ models: [] });
});

test("GET /models logs a sanitized warning when listing fails", async () => {
  const app = buildApp(loadConfig({ THT_HARNESS_DIR: "../harness" }), {
    thtRunner: {} as any,
    listModels: async () => { throw new Error("credential-value-must-not-appear"); },
  });
  const warn = vi.spyOn(app.log, "warn");

  const res = await app.inject({ method: "GET", url: "/models" });

  expect(res.json()).toEqual({ models: [] });
  expect(JSON.stringify(warn.mock.calls)).not.toContain("credential-value-must-not-appear");
  expect(warn).toHaveBeenCalled();
});

test("GET /models with empty listModels stub returns empty array", async () => {
  const app = buildApp(loadConfig({ THT_HARNESS_DIR: "../harness" }), {
    thtRunner: {} as any,
    listModels: async () => [],
  });

  const res = await app.inject({ method: "GET", url: "/models" });

  expect(res.statusCode).toBe(200);
  expect(res.json()).toEqual({ models: [] });
});