package database

import (
	"context"
	"fmt"
	"testing"
	"time"
)

func BenchmarkCreateOptions(b *testing.B) {
	store, err := NewSQLiteStore(":memory:")
	if err != nil {
		b.Fatalf("Failed to create store: %v", err)
	}
	defer store.Close() //nolint:errcheck // benchmark cleanup

	ctx := context.Background()
	if err := store.Initialize(ctx); err != nil {
		b.Fatalf("Failed to initialize: %v", err)
	}

	rev := &Revision{GitHash: "bench123", ChannelName: "bench"}
	if err := store.CreateRevision(ctx, rev); err != nil {
		b.Fatalf("Failed to create revision: %v", err)
	}

	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		opt := &Option{
			RevisionID:   rev.ID,
			Name:         fmt.Sprintf("services.test%d.enable", i),
			ParentPath:   fmt.Sprintf("services.test%d", i),
			Type:         "boolean",
			DefaultValue: "false",
			Description:  "Test option",
		}
		if err := store.CreateOption(ctx, opt); err != nil {
			b.Fatalf("Failed to create option: %v", err)
		}
	}
}

func BenchmarkCreateOptionsBatch(b *testing.B) {
	benchmarkBatch(b, 100)
}

func BenchmarkCreateOptionsBatch1000(b *testing.B) {
	benchmarkBatch(b, 1000)
}

func benchmarkBatch(b *testing.B, batchSize int) {
	store, err := NewSQLiteStore(":memory:")
	if err != nil {
		b.Fatalf("Failed to create store: %v", err)
	}
	defer store.Close() //nolint:errcheck // benchmark cleanup

	ctx := context.Background()
	if err := store.Initialize(ctx); err != nil {
		b.Fatalf("Failed to initialize: %v", err)
	}

	rev := &Revision{GitHash: "batchbench", ChannelName: "bench"}
	if err := store.CreateRevision(ctx, rev); err != nil {
		b.Fatalf("Failed to create revision: %v", err)
	}

	opts := make([]*Option, batchSize)
	for i := 0; i < batchSize; i++ {
		opts[i] = &Option{
			RevisionID:   rev.ID,
			Name:         fmt.Sprintf("services.batch%d.enable", i),
			ParentPath:   fmt.Sprintf("services.batch%d", i),
			Type:         "boolean",
			DefaultValue: "false",
			Description:  "Batch test option",
		}
	}

	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		// Reset IDs for next iteration
		for _, opt := range opts {
			opt.ID = 0
		}
		if err := store.CreateOptionsBatch(ctx, opts); err != nil {
			b.Fatalf("Failed to create batch: %v", err)
		}

		// Clean up for next iteration
		_ = store.DeleteRevision(ctx, rev.ID) //nolint:errcheck // benchmark cleanup
		rev = &Revision{GitHash: fmt.Sprintf("batchbench%d", i), ChannelName: "bench"}
		_ = store.CreateRevision(ctx, rev) //nolint:errcheck // benchmark setup
		for _, opt := range opts {
			opt.RevisionID = rev.ID
		}
	}
}

func BenchmarkSearchOptions(b *testing.B) {
	store, err := NewSQLiteStore(":memory:")
	if err != nil {
		b.Fatalf("Failed to create store: %v", err)
	}
	defer store.Close() //nolint:errcheck // benchmark cleanup

	ctx := context.Background()
	if err := store.Initialize(ctx); err != nil {
		b.Fatalf("Failed to initialize: %v", err)
	}

	rev := &Revision{GitHash: "searchbench", ChannelName: "bench"}
	if err := store.CreateRevision(ctx, rev); err != nil {
		b.Fatalf("Failed to create revision: %v", err)
	}

	// Create 1000 options to search through
	opts := make([]*Option, 1000)
	for i := 0; i < 1000; i++ {
		opts[i] = &Option{
			RevisionID:   rev.ID,
			Name:         fmt.Sprintf("services.service%d.enable", i),
			ParentPath:   fmt.Sprintf("services.service%d", i),
			Type:         "boolean",
			DefaultValue: "false",
			Description:  fmt.Sprintf("Enable service %d for testing purposes", i),
		}
	}
	if err := store.CreateOptionsBatch(ctx, opts); err != nil {
		b.Fatalf("Failed to create options: %v", err)
	}

	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		_, err := store.SearchOptions(ctx, rev.ID, "enable service", SearchFilters{Limit: 50})
		if err != nil {
			b.Fatalf("Search failed: %v", err)
		}
	}
}

func BenchmarkGetChildren(b *testing.B) {
	store, err := NewSQLiteStore(":memory:")
	if err != nil {
		b.Fatalf("Failed to create store: %v", err)
	}
	defer store.Close() //nolint:errcheck // benchmark cleanup

	ctx := context.Background()
	if err := store.Initialize(ctx); err != nil {
		b.Fatalf("Failed to initialize: %v", err)
	}

	rev := &Revision{GitHash: "childrenbench", ChannelName: "bench"}
	if err := store.CreateRevision(ctx, rev); err != nil {
		b.Fatalf("Failed to create revision: %v", err)
	}

	// Create parent and 100 children
	opts := make([]*Option, 101)
	opts[0] = &Option{
		RevisionID: rev.ID,
		Name:       "services",
		ParentPath: "",
		Type:       "attrsOf",
	}
	for i := 1; i <= 100; i++ {
		opts[i] = &Option{
			RevisionID: rev.ID,
			Name:       fmt.Sprintf("services.service%d", i),
			ParentPath: "services",
			Type:       "submodule",
		}
	}
	if err := store.CreateOptionsBatch(ctx, opts); err != nil {
		b.Fatalf("Failed to create options: %v", err)
	}

	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		_, err := store.GetChildren(ctx, rev.ID, "services")
		if err != nil {
			b.Fatalf("GetChildren failed: %v", err)
		}
	}
}

func BenchmarkSchemaInitialize(b *testing.B) {
	for i := 0; i < b.N; i++ {
		store, err := NewSQLiteStore(":memory:")
		if err != nil {
			b.Fatalf("Failed to create store: %v", err)
		}

		ctx := context.Background()
		if err := store.Initialize(ctx); err != nil {
			b.Fatalf("Failed to initialize: %v", err)
		}

		store.Close() //nolint:errcheck // benchmark cleanup
	}
}

// BenchmarkRevisionCRUD benchmarks the full CRUD cycle for revisions.
func BenchmarkRevisionCRUD(b *testing.B) {
	store, err := NewSQLiteStore(":memory:")
	if err != nil {
		b.Fatalf("Failed to create store: %v", err)
	}
	defer store.Close() //nolint:errcheck // benchmark cleanup

	ctx := context.Background()
	if err := store.Initialize(ctx); err != nil {
		b.Fatalf("Failed to initialize: %v", err)
	}

	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		rev := &Revision{
			GitHash:     fmt.Sprintf("crud%d", i),
			ChannelName: "test",
			CommitDate:  time.Now(),
		}

		// Create
		if err := store.CreateRevision(ctx, rev); err != nil {
			b.Fatalf("Create failed: %v", err)
		}

		// Read
		_, err := store.GetRevision(ctx, rev.GitHash)
		if err != nil {
			b.Fatalf("Get failed: %v", err)
		}

		// Update
		if err := store.UpdateRevisionOptionCount(ctx, rev.ID, 100); err != nil {
			b.Fatalf("Update failed: %v", err)
		}

		// Delete
		if err := store.DeleteRevision(ctx, rev.ID); err != nil {
			b.Fatalf("Delete failed: %v", err)
		}
	}
}