package e2e

import (
	"github.com/google/uuid"
	"github.com/navidrome/navidrome/conf"
	"github.com/navidrome/navidrome/conf/configtest"
	"github.com/navidrome/navidrome/server/subsonic/responses"
	. "github.com/onsi/ginkgo/v2"
	. "github.com/onsi/gomega"
)

var _ = Describe("Search Endpoints", func() {
	BeforeEach(func() {
		setupTestDB()
	})

	Describe("Search2", func() {
		It("finds artists by name", func() {
			resp := doReq("search2", "query", "Beatles")

			Expect(resp.Status).To(Equal(responses.StatusOK))
			Expect(resp.SearchResult2).ToNot(BeNil())
			Expect(resp.SearchResult2.Artist).ToNot(BeEmpty())

			found := false
			for _, a := range resp.SearchResult2.Artist {
				if a.Name == "The Beatles" {
					found = true
					break
				}
			}
			Expect(found).To(BeTrue(), "expected to find artist 'The Beatles'")
		})

		It("finds albums by name", func() {
			resp := doReq("search2", "query", "Abbey Road")

			Expect(resp.SearchResult2).ToNot(BeNil())
			Expect(resp.SearchResult2.Album).ToNot(BeEmpty())

			found := false
			for _, a := range resp.SearchResult2.Album {
				if a.Title == "Abbey Road" {
					found = true
					break
				}
			}
			Expect(found).To(BeTrue(), "expected to find album 'Abbey Road'")
		})

		It("finds songs by title", func() {
			resp := doReq("search2", "query", "Come Together")

			Expect(resp.SearchResult2).ToNot(BeNil())
			Expect(resp.SearchResult2.Song).ToNot(BeEmpty())

			found := false
			for _, s := range resp.SearchResult2.Song {
				if s.Title == "Come Together" {
					found = true
					break
				}
			}
			Expect(found).To(BeTrue(), "expected to find song 'Come Together'")
		})

		It("respects artistCount/albumCount/songCount limits", func() {
			resp := doReq("search2", "query", "Beatles",
				"artistCount", "1", "albumCount", "1", "songCount", "1")

			Expect(resp.SearchResult2).ToNot(BeNil())
			Expect(len(resp.SearchResult2.Artist)).To(BeNumerically("<=", 1))
			Expect(len(resp.SearchResult2.Album)).To(BeNumerically("<=", 1))
			Expect(len(resp.SearchResult2.Song)).To(BeNumerically("<=", 1))
		})

		It("supports offset parameters", func() {
			// First get all results for Beatles
			resp1 := doReq("search2", "query", "Beatles", "songCount", "500")
			allSongs := resp1.SearchResult2.Song

			if len(allSongs) > 1 {
				// Get with offset to skip the first song
				resp2 := doReq("search2", "query", "Beatles", "songOffset", "1", "songCount", "500")

				Expect(resp2.SearchResult2).ToNot(BeNil())
				Expect(len(resp2.SearchResult2.Song)).To(Equal(len(allSongs) - 1))
			}
		})

		It("returns empty results for non-matching query", func() {
			resp := doReq("search2", "query", "ZZZZNONEXISTENT99999")

			Expect(resp.SearchResult2).ToNot(BeNil())
			Expect(resp.SearchResult2.Artist).To(BeEmpty())
			Expect(resp.SearchResult2.Album).To(BeEmpty())
			Expect(resp.SearchResult2.Song).To(BeEmpty())
		})
	})

	Describe("Search3", func() {
		It("returns results in ID3 format", func() {
			resp := doReq("search3", "query", "Beatles")

			Expect(resp.Status).To(Equal(responses.StatusOK))
			Expect(resp.SearchResult3).ToNot(BeNil())
			// Verify ID3 format: Artist should be ArtistID3 with Name and AlbumCount
			Expect(resp.SearchResult3.Artist).ToNot(BeEmpty())
			Expect(resp.SearchResult3.Artist[0].Name).ToNot(BeEmpty())
			Expect(resp.SearchResult3.Artist[0].Id).ToNot(BeEmpty())
		})

		It("returns all results when query is empty (OpenSubsonic)", func() {
			resp := doReq("search3", "query", "")

			Expect(resp.Status).To(Equal(responses.StatusOK))
			Expect(resp.SearchResult3).ToNot(BeNil())
			Expect(resp.SearchResult3.Artist).To(HaveLen(5))
			Expect(resp.SearchResult3.Album).To(HaveLen(6))
			Expect(resp.SearchResult3.Song).To(HaveLen(7))
		})

		It("finds across all entity types simultaneously", func() {
			// "Beatles" should match artist, albums, and songs by The Beatles
			resp := doReq("search3", "query", "Beatles")

			Expect(resp.SearchResult3).ToNot(BeNil())

			// Should find at least the artist "The Beatles"
			artistFound := false
			for _, a := range resp.SearchResult3.Artist {
				if a.Name == "The Beatles" {
					artistFound = true
					break
				}
			}
			Expect(artistFound).To(BeTrue(), "expected to find artist 'The Beatles'")

			// Should find albums by The Beatles (albums contain "Beatles" in artist field)
			// Albums are returned as AlbumID3 type
			for _, a := range resp.SearchResult3.Album {
				Expect(a.Id).ToNot(BeEmpty())
				Expect(a.Name).ToNot(BeEmpty())
			}

			// Songs are returned as Child type
			for _, s := range resp.SearchResult3.Song {
				Expect(s.Id).ToNot(BeEmpty())
				Expect(s.Title).ToNot(BeEmpty())
			}
		})

		Describe("MBID search", func() {
			It("finds songs by mbz_recording_id", func() {
				resp := doReq("search3", "query", mbidComeTogetherRec)

				Expect(resp.Status).To(Equal(responses.StatusOK))
				Expect(resp.SearchResult3).ToNot(BeNil())
				Expect(resp.SearchResult3.Song).To(HaveLen(1))
				Expect(resp.SearchResult3.Song[0].Title).To(Equal("Come Together"))
			})

			It("finds songs by mbz_release_track_id", func() {
				resp := doReq("search3", "query", mbidSomething)

				Expect(resp.Status).To(Equal(responses.StatusOK))
				Expect(resp.SearchResult3).ToNot(BeNil())
				Expect(resp.SearchResult3.Song).To(HaveLen(1))
				Expect(resp.SearchResult3.Song[0].Title).To(Equal("Something"))
			})

			It("finds albums by mbz_album_id", func() {
				resp := doReq("search3", "query", mbidAbbeyRoadAlbum)

				Expect(resp.Status).To(Equal(responses.StatusOK))
				Expect(resp.SearchResult3).ToNot(BeNil())
				Expect(resp.SearchResult3.Album).To(HaveLen(1))
				Expect(resp.SearchResult3.Album[0].Name).To(Equal("Abbey Road"))
			})

			It("finds albums by mbz_release_group_id", func() {
				resp := doReq("search3", "query", mbidAbbeyRoadRelGroup)

				Expect(resp.Status).To(Equal(responses.StatusOK))
				Expect(resp.SearchResult3).ToNot(BeNil())
				Expect(resp.SearchResult3.Album).To(HaveLen(1))
				Expect(resp.SearchResult3.Album[0].Name).To(Equal("Abbey Road"))
			})

			It("finds artists by mbz_artist_id", func() {
				resp := doReq("search3", "query", mbidBeatlesArtist)

				Expect(resp.Status).To(Equal(responses.StatusOK))
				Expect(resp.SearchResult3).ToNot(BeNil())
				Expect(resp.SearchResult3.Artist).To(HaveLen(1))
				Expect(resp.SearchResult3.Artist[0].Name).To(Equal("The Beatles"))
			})

			It("returns empty results for non-matching UUID", func() {
				nonMatchingUUID := uuid.NewString()
				resp := doReq("search3", "query", nonMatchingUUID)

				Expect(resp.Status).To(Equal(responses.StatusOK))
				Expect(resp.SearchResult3).ToNot(BeNil())
				Expect(resp.SearchResult3.Artist).To(BeEmpty())
				Expect(resp.SearchResult3.Album).To(BeEmpty())
				Expect(resp.SearchResult3.Song).To(BeEmpty())
			})

			It("does not return songs for artist MBID", func() {
				// media_file MBID search only checks mbz_recording_id and mbz_release_track_id,
				// so an artist MBID should return only the artist, not songs
				resp := doReq("search3", "query", mbidBeatlesArtist)

				Expect(resp.Status).To(Equal(responses.StatusOK))
				Expect(resp.SearchResult3).ToNot(BeNil())
				Expect(resp.SearchResult3.Artist).To(HaveLen(1))
				Expect(resp.SearchResult3.Artist[0].Name).To(Equal("The Beatles"))
				Expect(resp.SearchResult3.Song).To(BeEmpty())
			})
		})

		Describe("CJK search", func() {
			It("finds songs by CJK title", func() {
				resp := doReq("search3", "query", "プラチナ")

				Expect(resp.Status).To(Equal(responses.StatusOK))
				Expect(resp.SearchResult3).ToNot(BeNil())
				Expect(resp.SearchResult3.Song).To(HaveLen(1))
				Expect(resp.SearchResult3.Song[0].Title).To(Equal("プラチナ・ジェット"))
			})

			It("finds artists by CJK name", func() {
				resp := doReq("search3", "query", "シートベルツ")

				Expect(resp.Status).To(Equal(responses.StatusOK))
				Expect(resp.SearchResult3).ToNot(BeNil())
				Expect(resp.SearchResult3.Artist).To(HaveLen(1))
				Expect(resp.SearchResult3.Artist[0].Name).To(Equal("シートベルツ"))
			})

			It("finds albums by CJK artist name", func() {
				resp := doReq("search3", "query", "シートベルツ")

				Expect(resp.Status).To(Equal(responses.StatusOK))
				Expect(resp.SearchResult3).ToNot(BeNil())
				Expect(resp.SearchResult3.Album).To(HaveLen(1))
				Expect(resp.SearchResult3.Album[0].Name).To(Equal("COWBOY BEBOP"))
			})
		})

		Describe("Legacy backend", func() {
			It("returns results using legacy LIKE-based search when configured", func() {
				DeferCleanup(configtest.SetupConfig())
				conf.Server.Search.Backend = "legacy"

				resp := doReq("search3", "query", "Beatles")

				Expect(resp.Status).To(Equal(responses.StatusOK))
				Expect(resp.SearchResult3).ToNot(BeNil())
				Expect(resp.SearchResult3.Artist).ToNot(BeEmpty())

				found := false
				for _, a := range resp.SearchResult3.Artist {
					if a.Name == "The Beatles" {
						found = true
						break
					}
				}
				Expect(found).To(BeTrue(), "expected to find artist 'The Beatles' with legacy backend")
			})
		})
	})
})