package httpapi

import (
	"bytes"
	"encoding/json"
	"net/http"
	"net/http/httptest"
	"testing"
)

func TestRouterHealthz(t *testing.T) {
	req := httptest.NewRequest(http.MethodGet, "/healthz", nil)
	w := httptest.NewRecorder()

	NewRouter(newInMemoryPlayerStatusStore()).ServeHTTP(w, req)

	if got, want := w.Code, http.StatusOK; got != want {
		t.Fatalf("status = %d, want %d", got, want)
	}

	var response struct {
		Service string `json:"service"`
		Status  string `json:"status"`
	}

	if err := json.Unmarshal(w.Body.Bytes(), &response); err != nil {
		t.Fatalf("Unmarshal() error = %v", err)
	}

	if got, want := response.Service, "morz-infoboard-backend"; got != want {
		t.Fatalf("service = %q, want %q", got, want)
	}

	if got, want := response.Status, "ok"; got != want {
		t.Fatalf("status field = %q, want %q", got, want)
	}
}

func TestRouterBaseAPI(t *testing.T) {
	req := httptest.NewRequest(http.MethodGet, "/api/v1", nil)
	w := httptest.NewRecorder()

	NewRouter(newInMemoryPlayerStatusStore()).ServeHTTP(w, req)

	if got, want := w.Code, http.StatusOK; got != want {
		t.Fatalf("status = %d, want %d", got, want)
	}

	var response struct {
		Name    string   `json:"name"`
		Version string   `json:"version"`
		Tools   []string `json:"tools"`
	}

	if err := json.Unmarshal(w.Body.Bytes(), &response); err != nil {
		t.Fatalf("Unmarshal() error = %v", err)
	}

	if got, want := response.Name, "morz-infoboard-backend"; got != want {
		t.Fatalf("name = %q, want %q", got, want)
	}

	if got, want := response.Version, "dev"; got != want {
		t.Fatalf("version = %q, want %q", got, want)
	}

	if got, want := len(response.Tools), 3; got != want {
		t.Fatalf("len(tools) = %d, want %d", got, want)
	}

	if got, want := response.Tools[0], "message-wall-resolve"; got != want {
		t.Fatalf("tool[0] = %q, want %q", got, want)
	}

	if got, want := response.Tools[1], "screen-status-list"; got != want {
		t.Fatalf("tool[1] = %q, want %q", got, want)
	}

	if got, want := response.Tools[2], "screen-status-detail"; got != want {
		t.Fatalf("tool[2] = %q, want %q", got, want)
	}
}

func TestRouterMeta(t *testing.T) {
	req := httptest.NewRequest(http.MethodGet, "/api/v1/meta", nil)
	w := httptest.NewRecorder()

	NewRouter(newInMemoryPlayerStatusStore()).ServeHTTP(w, req)

	if got, want := w.Code, http.StatusOK; got != want {
		t.Fatalf("status = %d, want %d", got, want)
	}

	var response struct {
		Service string `json:"service"`
		Version string `json:"version"`
		API     struct {
			BasePath string `json:"base_path"`
			Health   string `json:"health"`
			Tools    []struct {
				Name   string `json:"name"`
				Method string `json:"method"`
				Path   string `json:"path"`
			} `json:"tools"`
		} `json:"api"`
	}

	if err := json.Unmarshal(w.Body.Bytes(), &response); err != nil {
		t.Fatalf("Unmarshal() error = %v", err)
	}

	if got, want := response.API.BasePath, "/api/v1"; got != want {
		t.Fatalf("api.base_path = %q, want %q", got, want)
	}

	if got, want := response.API.Health, "/healthz"; got != want {
		t.Fatalf("api.health = %q, want %q", got, want)
	}

	if got, want := len(response.API.Tools), 4; got != want {
		t.Fatalf("len(api.tools) = %d, want %d", got, want)
	}

	if got, want := response.API.Tools[0].Path, "/api/v1/tools/message-wall/resolve"; got != want {
		t.Fatalf("api.tools[0].path = %q, want %q", got, want)
	}

	if got, want := response.API.Tools[1].Path, "/api/v1/screens/status"; got != want {
		t.Fatalf("api.tools[1].path = %q, want %q", got, want)
	}

	if got, want := response.API.Tools[2].Path, "/api/v1/screens/{screenId}/status"; got != want {
		t.Fatalf("api.tools[2].path = %q, want %q", got, want)
	}

	if got, want := response.API.Tools[3].Path, "/api/v1/player/status"; got != want {
		t.Fatalf("api.tools[3].path = %q, want %q", got, want)
	}
}

func TestRouterPlayerStatusRoute(t *testing.T) {
	req := httptest.NewRequest(http.MethodPost, "/api/v1/player/status", bytes.NewBufferString(`{"screen_id":"demo","ts":"2026-03-22T16:00:00Z","status":"running","heartbeat_every_seconds":30}`))
	w := httptest.NewRecorder()

	NewRouter(newInMemoryPlayerStatusStore()).ServeHTTP(w, req)

	if got, want := w.Code, http.StatusOK; got != want {
		t.Fatalf("status = %d, want %d", got, want)
	}
}

func TestRouterScreenStatusRoute(t *testing.T) {
	store := newInMemoryPlayerStatusStore()
	store.Save(playerStatusRecord{ScreenID: "demo", Timestamp: "2026-03-22T16:00:00Z", Status: "running"})
	req := httptest.NewRequest(http.MethodGet, "/api/v1/screens/demo/status", nil)
	w := httptest.NewRecorder()

	NewRouter(store).ServeHTTP(w, req)

	if got, want := w.Code, http.StatusOK; got != want {
		t.Fatalf("status = %d, want %d", got, want)
	}
}

func TestRouterScreenStatusListRoute(t *testing.T) {
	store := newInMemoryPlayerStatusStore()
	req := httptest.NewRequest(http.MethodGet, "/api/v1/screens/status", nil)
	w := httptest.NewRecorder()

	NewRouter(store).ServeHTTP(w, req)

	if got, want := w.Code, http.StatusOK; got != want {
		t.Fatalf("status = %d, want %d", got, want)
	}
}