package server

import (
	"encoding/json"
	"io"
	"net/http"
	"net/http/httptest"
	"path/filepath"
	"strings"
	"testing"
	"time"

	"github.com/longbin/agent-notify/internal/remote"
)

func openTestStore(t *testing.T) *Store {
	t.Helper()
	db := filepath.Join(t.TempDir(), "test.db")
	s, err := Open(db)
	if err != nil {
		t.Fatal(err)
	}
	t.Cleanup(func() { _ = s.Close() })
	return s
}

func TestHTTPPostWithoutToken401(t *testing.T) {
	store := openTestStore(t)
	srv := httptest.NewServer(NewHandler(store, "secret"))
	defer srv.Close()

	body := `{"hostname":"h","ips":["1.2.3.4"],"agent":"Cursor","cwd":"/x","status":"waiting","updated_at":"2026-06-02T00:00:00Z"}`
	resp, err := http.Post(srv.URL+"/api/v1/status", "application/json", strings.NewReader(body))
	if err != nil {
		t.Fatal(err)
	}
	defer resp.Body.Close()
	if resp.StatusCode != http.StatusUnauthorized {
		t.Fatalf("status: got %d want %d", resp.StatusCode, http.StatusUnauthorized)
	}
}

func TestHTTPPostValidToken200(t *testing.T) {
	store := openTestStore(t)
	srv := httptest.NewServer(NewHandler(store, "secret"))
	defer srv.Close()

	now := time.Now().UTC().Format(time.RFC3339Nano)
	body := `{"hostname":"h","ips":["1.2.3.4"],"agent":"Cursor","cwd":"/x","status":"waiting","updated_at":"` + now + `"}`
	req, err := http.NewRequest(http.MethodPost, srv.URL+"/api/v1/status", strings.NewReader(body))
	if err != nil {
		t.Fatal(err)
	}
	req.Header.Set("Content-Type", "application/json")
	req.Header.Set("Authorization", "Bearer secret")

	resp, err := http.DefaultClient.Do(req)
	if err != nil {
		t.Fatal(err)
	}
	defer resp.Body.Close()
	if resp.StatusCode != http.StatusOK {
		t.Fatalf("status: got %d want %d", resp.StatusCode, http.StatusOK)
	}
	var okResp map[string]bool
	if err := json.NewDecoder(resp.Body).Decode(&okResp); err != nil {
		t.Fatal(err)
	}
	if !okResp["ok"] {
		t.Fatalf("response: %+v", okResp)
	}

	rows, err := store.List(ListFilters{Agent: "Cursor"})
	if err != nil {
		t.Fatal(err)
	}
	if len(rows) != 1 {
		t.Fatalf("expected 1 row in store, got %d", len(rows))
	}
	if rows[0].Hostname != "h" || rows[0].Status != "waiting" {
		t.Fatalf("row: %+v", rows[0])
	}
}

func TestHTTPGetAgentFilter(t *testing.T) {
	store := openTestStore(t)
	now := time.Now().UTC()
	for _, agent := range []string{"Cursor", "Claude"} {
		if err := store.Upsert(remote.StatusReport{
			Hostname:  "host-filter",
			IPs:       []string{"10.0.0.1"},
			Agent:     agent,
			CWD:       "/proj",
			Status:    "waiting",
			UpdatedAt: now,
		}); err != nil {
			t.Fatal(err)
		}
	}

	srv := httptest.NewServer(NewHandler(store, "secret"))
	defer srv.Close()

	req, err := http.NewRequest(http.MethodGet, srv.URL+"/api/v1/status?agent=Cursor", nil)
	if err != nil {
		t.Fatal(err)
	}
	req.Header.Set("Authorization", "Bearer secret")

	resp, err := http.DefaultClient.Do(req)
	if err != nil {
		t.Fatal(err)
	}
	defer resp.Body.Close()
	if resp.StatusCode != http.StatusOK {
		t.Fatalf("status: got %d want %d", resp.StatusCode, http.StatusOK)
	}
	data, err := io.ReadAll(resp.Body)
	if err != nil {
		t.Fatal(err)
	}
	var rows []SessionRow
	if err := json.Unmarshal(data, &rows); err != nil {
		t.Fatal(err)
	}
	if len(rows) != 1 {
		t.Fatalf("expected 1 row, got %d: %s", len(rows), data)
	}
	if rows[0].Agent != "Cursor" {
		t.Fatalf("agent: got %q want Cursor", rows[0].Agent)
	}
}

func TestHTTPGetRootNoAuth200(t *testing.T) {
	store := openTestStore(t)
	srv := httptest.NewServer(NewHandler(store, "secret"))
	defer srv.Close()

	resp, err := http.Get(srv.URL + "/")
	if err != nil {
		t.Fatal(err)
	}
	defer resp.Body.Close()
	if resp.StatusCode != http.StatusOK {
		t.Fatalf("status: got %d want %d", resp.StatusCode, http.StatusOK)
	}
	body, err := io.ReadAll(resp.Body)
	if err != nil {
		t.Fatal(err)
	}
	if !strings.Contains(string(body), "agent-notify") {
		t.Fatalf("expected dashboard HTML, got: %q", string(body[:min(80, len(body))]))
	}
}

func TestHTTPHealthz200(t *testing.T) {
	store := openTestStore(t)
	srv := httptest.NewServer(NewHandler(store, "secret"))
	defer srv.Close()

	resp, err := http.Get(srv.URL + "/healthz")
	if err != nil {
		t.Fatal(err)
	}
	defer resp.Body.Close()
	if resp.StatusCode != http.StatusOK {
		t.Fatalf("status: got %d want %d", resp.StatusCode, http.StatusOK)
	}
}