//go:build integration

package dbtest

import (
	"context"
	"log/slog"
	"os"
	"path/filepath"
	"testing"
	"time"

	"github.com/google/uuid"
	"github.com/stretchr/testify/require"

	"pipu/api/internal/library"
	"pipu/api/internal/platform/db"
)

func TestLibraryDiagnostics(t *testing.T) {
	pool := connect(t)
	ctx := context.Background()
	require.NoError(t, db.Migrate(ctx, pool))
	store := library.NewStore(pool)
	src, err := store.SaveSource(ctx, library.Source{ID: uuid.New(), Name: "diagnostics", Type: library.SourceLocal, Status: "mounted", TagsFirst: true, NFSOptions: "ro"})
	require.NoError(t, err)
	t.Cleanup(func() {
		require.NoError(t, store.DeleteSource(ctx, src.ID))
		require.NoError(t, store.CleanupOrphans(ctx))
	})
	before, err := store.Counts(ctx)
	require.NoError(t, err)
	badID, err := store.SaveFile(ctx, src.ID, uuid.Nil, library.FileData{RelPath: "broken.mp3", Mtime: time.Now(), ScanError: "invalid audio"}, nil)
	require.NoError(t, err)
	counts, err := store.Counts(ctx)
	require.NoError(t, err)
	require.Equal(t, before.Errors+1, counts.Errors)
	require.NoError(t, store.MarkMissing(ctx, []uuid.UUID{badID}, time.Now()))
	counts, err = store.Counts(ctx)
	require.NoError(t, err)
	require.Equal(t, before.Errors, counts.Errors)
	fileErrors, err := store.FileErrors(ctx, "", 200)
	require.NoError(t, err)
	for _, item := range fileErrors {
		require.NotEqual(t, badID, item.ID, "absent files must not remain in read errors")
	}
	// Failed analysis jobs retain their place in diagnostics even without a file.
	root := t.TempDir()
	scanner := library.NewScanner(store, fakeProber{}, library.NewProgressBoard(), slog.New(slog.DiscardHandler))
	tracks := map[uuid.UUID]bool{}
	for _, name := range []string{"Artist - First.flac", "Artist - Second.flac"} {
		require.NoError(t, os.WriteFile(filepath.Join(root, name), []byte(name), 0o644))
		fileID, err := scanner.ScanFile(ctx, src, root, name)
		require.NoError(t, err)
		var trackID uuid.UUID
		require.NoError(t, pool.QueryRow(ctx, `SELECT track_id FROM media_files WHERE id = $1`, fileID).Scan(&trackID))
		tracks[trackID] = true
		_, err = pool.Exec(ctx, `UPDATE analysis_jobs SET status = 'failed', error = 'audio is shorter than 1 s' WHERE track_id = $1`, trackID)
		require.NoError(t, err)
		if name == "Artist - Second.flac" {
			_, err = pool.Exec(ctx, `DELETE FROM media_files WHERE id = $1`, fileID)
			require.NoError(t, err)
		}
	}
	var paths, missing int
	after := uuid.Nil
	for {
		page, err := store.AnalysisErrors(ctx, after, 1)
		require.NoError(t, err)
		if len(page) == 0 {
			break
		}
		item := page[0]
		require.NotEqual(t, after, item.TrackID, "pagination must advance")
		after = item.TrackID
		if !tracks[item.TrackID] {
			continue
		}
		require.Equal(t, "audio is shorter than 1 s", item.Error)
		if item.RelPath == nil {
			missing++
		} else {
			paths++
			require.Equal(t, "Artist - First.flac", *item.RelPath)
			require.Equal(t, src.ID, *item.SourceID)
		}
	}
	require.Equal(t, 1, paths)
	require.Equal(t, 1, missing)
}

func TestScanExcludedFolders(t *testing.T) {
	pool := connect(t)
	ctx := context.Background()
	require.NoError(t, db.Migrate(ctx, pool))
	store := library.NewStore(pool)
	src, err := store.SaveSource(ctx, library.Source{ID: uuid.New(), Name: "exclusions", Type: library.SourceLocal, Status: "mounted", TagsFirst: true, NFSOptions: "ro"})
	require.NoError(t, err)
	t.Cleanup(func() {
		require.NoError(t, store.DeleteSource(ctx, src.ID))
		require.NoError(t, store.CleanupOrphans(ctx))
	})
	root := t.TempDir()
	for _, rel := range []string{"Downloads_PumpEars/Artist - Loop.wav", "Downloads_PumpEars/nested/Artist - Hit.wav", "Downloads_PumpEars-copy/Artist - Song.flac"} {
		p := filepath.Join(root, filepath.FromSlash(rel))
		require.NoError(t, os.MkdirAll(filepath.Dir(p), 0o755))
		require.NoError(t, os.WriteFile(p, []byte(rel), 0o644))
	}
	board := library.NewProgressBoard()
	scanner := library.NewScanner(store, fakeProber{}, board, slog.New(slog.DiscardHandler))
	scan := func() library.Progress {
		require.NoError(t, scanner.Start(src, root, true))
		require.Eventually(t, func() bool { p, ok := board.Get(src.ID); return ok && !p.Running }, 10*time.Second, 10*time.Millisecond)
		p, _ := board.Get(src.ID)
		require.Empty(t, p.Error)
		return p
	}
	require.Equal(t, 3, scan().Found)
	_, err = pool.Exec(ctx, `UPDATE analysis_jobs SET status = 'failed', error = 'too short' WHERE track_id IN (SELECT track_id FROM media_files WHERE source_id = $1)`, src.ID)
	require.NoError(t, err)
	before, err := store.AnalysisCounts(ctx)
	require.NoError(t, err)
	src.ExcludedDirs = []string{"Downloads_PumpEars"}
	src, err = store.SaveSource(ctx, src)
	require.NoError(t, err)
	saved, err := store.GetSource(ctx, src.ID)
	require.NoError(t, err)
	require.Equal(t, src.ExcludedDirs, saved.ExcludedDirs)
	counts, err := store.AnalysisCounts(ctx)
	require.NoError(t, err)
	require.Equal(t, before.Failed-2, counts.Failed, "old failed jobs from excluded folders disappear immediately")
	_, err = store.RetryFailedAnalysis(ctx)
	require.NoError(t, err)
	var failed int
	require.NoError(t, pool.QueryRow(ctx, `SELECT count(*) FROM analysis_jobs WHERE status = 'failed' AND track_id IN (SELECT track_id FROM media_files WHERE source_id = $1)`, src.ID).Scan(&failed))
	require.Equal(t, 2, failed, "retry must not requeue excluded jobs")
	p := scan()
	require.Equal(t, 1, p.Found)
	require.Equal(t, 1, p.ToProcess)
	require.Zero(t, p.Missing)
	files, err := store.Files(ctx, src.ID)
	require.NoError(t, err)
	require.Len(t, files, 3, "excluded records must be preserved")
	for _, f := range files {
		require.False(t, f.Missing, "excluded files must not be treated as absent")
	}
	// Literal matching must not treat % and _ as SQL wildcards.
	for _, test := range []struct {
		path     string
		excluded bool
	}{{"100%_loops/a.wav", true}, {"100xxloops/a.wav", false}, {"100%_loops-copy/a.wav", false}} {
		var excluded bool
		require.NoError(t, pool.QueryRow(ctx, `SELECT library_path_excluded($1, ARRAY['100%_loops'])`, test.path).Scan(&excluded))
		require.Equal(t, test.excluded, excluded)
	}
	src.ExcludedDirs = []string{}
	src, err = store.SaveSource(ctx, src)
	require.NoError(t, err)
	require.Equal(t, 3, scan().Found, "clearing exclusions makes the subtree eligible again")
}