package handler

import (
	"net/http"
	"net/http/httptest"
	"os"
	"path/filepath"
	"testing"

	"github.com/gin-gonic/gin"
	"github.com/glebarez/sqlite"
	"go.uber.org/zap"
	"gorm.io/gorm"

	"github.com/ShukeBta/MediaStationGo/internal/config"
	"github.com/ShukeBta/MediaStationGo/internal/model"
	"github.com/ShukeBta/MediaStationGo/internal/repository"
	"github.com/ShukeBta/MediaStationGo/internal/service"
)

func TestEmbyLowercaseVideoStreamRouteServesMedia(t *testing.T) {
	gin.SetMode(gin.TestMode)
	db, err := gorm.Open(sqlite.Open(":memory:"), &gorm.Config{})
	if err != nil {
		t.Fatalf("open db: %v", err)
	}
	if err := db.AutoMigrate(model.AllModels()...); err != nil {
		t.Fatalf("migrate: %v", err)
	}
	repos := repository.New(db)
	if err := repos.User.Create(t.Context(), &model.User{
		Base:         model.Base{ID: "user-1"},
		Username:     "tester",
		PasswordHash: "x",
		Role:         "admin",
		Tier:         "plus",
		IsActive:     true,
	}); err != nil {
		t.Fatalf("create user: %v", err)
	}
	dir := t.TempDir()
	mediaPath := filepath.Join(dir, "sample.mp4")
	if err := os.WriteFile(mediaPath, []byte("fake-video-bytes"), 0o644); err != nil {
		t.Fatalf("write media: %v", err)
	}
	lib := model.Library{Name: "电影", Path: dir, Type: "movie", Enabled: true}
	if err := repos.Library.Create(t.Context(), &lib); err != nil {
		t.Fatalf("create library: %v", err)
	}
	if err := db.Create(&model.Media{
		Base:      model.Base{ID: "media-1"},
		LibraryID: lib.ID,
		Title:     "Lowercase Stream",
		Path:      mediaPath,
		Container: "mp4",
	}).Error; err != nil {
		t.Fatalf("create media: %v", err)
	}

	const secret = "test-secret"
	router := gin.New()
	registerEmbyRoutes(router, secret, &service.Container{
		Repo:   repos,
		Emby:   service.NewEmbyService(&config.Config{}, zap.NewNop(), repos),
		Stream: service.NewStreamService(&config.Config{}, zap.NewNop(), repos, nil),
	})

	req := httptest.NewRequest(http.MethodGet, "/videos/media-1/stream?api_key="+signedTestToken(t, secret), nil)
	w := httptest.NewRecorder()
	router.ServeHTTP(w, req)

	if w.Code != http.StatusOK {
		t.Fatalf("unexpected status: %d body=%s", w.Code, w.Body.String())
	}
	if got := w.Body.String(); got != "fake-video-bytes" {
		t.Fatalf("unexpected stream body: %q", got)
	}
}

func TestEmbyPrefixedAPIStreamRouteServesMedia(t *testing.T) {
	gin.SetMode(gin.TestMode)
	db, err := gorm.Open(sqlite.Open(":memory:"), &gorm.Config{})
	if err != nil {
		t.Fatalf("open db: %v", err)
	}
	if err := db.AutoMigrate(model.AllModels()...); err != nil {
		t.Fatalf("migrate: %v", err)
	}
	repos := repository.New(db)
	if err := repos.User.Create(t.Context(), &model.User{
		Base:         model.Base{ID: "user-1"},
		Username:     "tester",
		PasswordHash: "x",
		Role:         "admin",
		Tier:         "plus",
		IsActive:     true,
	}); err != nil {
		t.Fatalf("create user: %v", err)
	}
	dir := t.TempDir()
	mediaPath := filepath.Join(dir, "sample.mp4")
	if err := os.WriteFile(mediaPath, []byte("fake-video-bytes"), 0o644); err != nil {
		t.Fatalf("write media: %v", err)
	}
	lib := model.Library{Name: "电影", Path: dir, Type: "movie", Enabled: true}
	if err := repos.Library.Create(t.Context(), &lib); err != nil {
		t.Fatalf("create library: %v", err)
	}
	if err := db.Create(&model.Media{
		Base:      model.Base{ID: "media-1"},
		LibraryID: lib.ID,
		Title:     "Prefixed API Stream",
		Path:      mediaPath,
		Container: "mp4",
	}).Error; err != nil {
		t.Fatalf("create media: %v", err)
	}

	const secret = "test-secret"
	router := gin.New()
	registerEmbyRoutes(router, secret, &service.Container{
		Repo:   repos,
		Emby:   service.NewEmbyService(&config.Config{}, zap.NewNop(), repos),
		Stream: service.NewStreamService(&config.Config{}, zap.NewNop(), repos, nil),
	})

	req := httptest.NewRequest(http.MethodGet, "/emby/api/stream/media-1?api_key="+signedTestToken(t, secret), nil)
	w := httptest.NewRecorder()
	router.ServeHTTP(w, req)

	if w.Code != http.StatusOK {
		t.Fatalf("unexpected status: %d body=%s", w.Code, w.Body.String())
	}
	if got := w.Body.String(); got != "fake-video-bytes" {
		t.Fatalf("unexpected stream body: %q", got)
	}
}

func TestEmbyLowercaseOriginalHeadRouteServesHeaders(t *testing.T) {
	gin.SetMode(gin.TestMode)
	db, err := gorm.Open(sqlite.Open(":memory:"), &gorm.Config{})
	if err != nil {
		t.Fatalf("open db: %v", err)
	}
	if err := db.AutoMigrate(model.AllModels()...); err != nil {
		t.Fatalf("migrate: %v", err)
	}
	repos := repository.New(db)
	if err := repos.User.Create(t.Context(), &model.User{
		Base:         model.Base{ID: "user-1"},
		Username:     "tester",
		PasswordHash: "x",
		Role:         "admin",
		Tier:         "plus",
		IsActive:     true,
	}); err != nil {
		t.Fatalf("create user: %v", err)
	}
	dir := t.TempDir()
	mediaPath := filepath.Join(dir, "sample.mp4")
	if err := os.WriteFile(mediaPath, []byte("fake-video-bytes"), 0o644); err != nil {
		t.Fatalf("write media: %v", err)
	}
	lib := model.Library{Name: "电影", Path: dir, Type: "movie", Enabled: true}
	if err := repos.Library.Create(t.Context(), &lib); err != nil {
		t.Fatalf("create library: %v", err)
	}
	if err := db.Create(&model.Media{
		Base:      model.Base{ID: "media-1"},
		LibraryID: lib.ID,
		Title:     "Lowercase Original",
		Path:      mediaPath,
		Container: "mp4",
	}).Error; err != nil {
		t.Fatalf("create media: %v", err)
	}

	const secret = "test-secret"
	router := gin.New()
	registerEmbyRoutes(router, secret, &service.Container{
		Repo:   repos,
		Emby:   service.NewEmbyService(&config.Config{}, zap.NewNop(), repos),
		Stream: service.NewStreamService(&config.Config{}, zap.NewNop(), repos, nil),
	})

	req := httptest.NewRequest(http.MethodHead, "/videos/media-1/original.mp4?api_key="+signedTestToken(t, secret), nil)
	w := httptest.NewRecorder()
	router.ServeHTTP(w, req)

	if w.Code != http.StatusOK {
		t.Fatalf("unexpected status: %d body=%s", w.Code, w.Body.String())
	}
	if w.Body.Len() != 0 {
		t.Fatalf("HEAD response should not include body, got %q", w.Body.String())
	}
}

func TestEmbyLowercaseVideoHLSRouteDoesNot404WhenDirectOnly(t *testing.T) {
	gin.SetMode(gin.TestMode)
	db, err := gorm.Open(sqlite.Open(":memory:"), &gorm.Config{})
	if err != nil {
		t.Fatalf("open db: %v", err)
	}
	if err := db.AutoMigrate(model.AllModels()...); err != nil {
		t.Fatalf("migrate: %v", err)
	}
	repos := repository.New(db)
	if err := repos.User.Create(t.Context(), &model.User{
		Base:         model.Base{ID: "user-1"},
		Username:     "tester",
		PasswordHash: "x",
		Role:         "admin",
		Tier:         "plus",
		IsActive:     true,
	}); err != nil {
		t.Fatalf("create user: %v", err)
	}
	dir := t.TempDir()
	mediaPath := filepath.Join(dir, "sample.mp4")
	if err := os.WriteFile(mediaPath, []byte("fake-video-bytes"), 0o644); err != nil {
		t.Fatalf("write media: %v", err)
	}
	lib := model.Library{Name: "电影", Path: dir, Type: "movie", Enabled: true}
	if err := repos.Library.Create(t.Context(), &lib); err != nil {
		t.Fatalf("create library: %v", err)
	}
	if err := db.Create(&model.Media{
		Base:      model.Base{ID: "media-1"},
		LibraryID: lib.ID,
		Title:     "Lowercase HLS",
		Path:      mediaPath,
		Container: "mp4",
	}).Error; err != nil {
		t.Fatalf("create media: %v", err)
	}
	if err := repos.Setting.Set(t.Context(), service.PlaybackDirectOnlySettingKey, "true"); err != nil {
		t.Fatalf("set direct-only: %v", err)
	}

	const secret = "test-secret"
	router := gin.New()
	registerEmbyRoutes(router, secret, &service.Container{
		Repo:   repos,
		Emby:   service.NewEmbyService(&config.Config{}, zap.NewNop(), repos),
		Stream: service.NewStreamService(&config.Config{}, zap.NewNop(), repos, nil),
	})

	req := httptest.NewRequest(http.MethodGet, "/videos/media-1/master.m3u8?api_key="+signedTestToken(t, secret), nil)
	w := httptest.NewRecorder()
	router.ServeHTTP(w, req)

	if w.Code == http.StatusNotFound {
		t.Fatalf("lowercase HLS route should be registered, got 404")
	}
	if w.Code != http.StatusConflict {
		t.Fatalf("direct-only HLS should return 409, got %d body=%s", w.Code, w.Body.String())
	}
}