package main

import (
	"context"
	"database/sql"
	"fmt"
	"log"

	"github.com/example/sndit/backend/internal/config"
	"github.com/example/sndit/backend/internal/db"
	"github.com/google/uuid"
	"golang.org/x/crypto/bcrypt"
)

const (
	demoEmail    = "demo@example.com"
	demoPassword = "DemoPassword123!"
)

func main() {
	cfg := config.Load()
	ctx := context.Background()
	database, err := db.New(ctx, cfg.DBDriver, cfg.DatabaseDSN())
	if err != nil {
		log.Fatalf("database unavailable: %v", err)
	}
	defer database.Close()

	if err := seed(ctx, database); err != nil {
		log.Fatal(err)
	}
	log.Printf("seeded %s with the Noah Bianchi demo gallery", demoEmail)
}

func seed(ctx context.Context, database *sql.DB) error {
	passwordHash, err := bcrypt.GenerateFromPassword([]byte(demoPassword), bcrypt.DefaultCost)
	if err != nil {
		return fmt.Errorf("hash demo password: %w", err)
	}
	if _, err := database.ExecContext(ctx, `
		INSERT INTO users (id, email, password_hash, name)
		VALUES ($1, $2, $3, $4)
		ON CONFLICT (email) DO UPDATE SET password_hash = EXCLUDED.password_hash, name = EXCLUDED.name, updated_at = CURRENT_TIMESTAMP
	`, demoUserID, demoEmail, string(passwordHash), "Noah Bianchi"); err != nil {
		return fmt.Errorf("seed demo user: %w", err)
	}

	if _, err := database.ExecContext(ctx, `
		INSERT INTO galleries (
			id, user_id, slug, title, client_name, description, status,
			downloads_enabled, favorites_enabled, download_all_enabled, watermark_enabled,
			cover_media_id, theme_config, branding_config, published_at
		)
		VALUES ($1, $2, $3, $4, $5, $6, 'published', TRUE, TRUE, TRUE, FALSE, $7, $8, $9, CURRENT_TIMESTAMP)
		ON CONFLICT (slug) DO UPDATE SET
			user_id = EXCLUDED.user_id, title = EXCLUDED.title, client_name = EXCLUDED.client_name,
			description = EXCLUDED.description, status = EXCLUDED.status,
			downloads_enabled = EXCLUDED.downloads_enabled, favorites_enabled = EXCLUDED.favorites_enabled,
			download_all_enabled = EXCLUDED.download_all_enabled, watermark_enabled = EXCLUDED.watermark_enabled,
			cover_media_id = EXCLUDED.cover_media_id, theme_config = EXCLUDED.theme_config,
			branding_config = EXCLUDED.branding_config, published_at = EXCLUDED.published_at,
			updated_at = CURRENT_TIMESTAMP
	`, demoGalleryID, demoUserID, "emma-james-wedding", "Emma & James", "Emma & James", "An early summer wedding, held close to the water and the people who make it home.", demoCoverID,
		`{"mode":"light","layout":"editorial","accent":"#ad695b","font":"serif"}`,
		`{"studioName":"Noah Bianchi","tagline":"Photographs for keeps.","websiteUrl":"https://example.com","instagramUrl":"https://instagram.com"}`); err != nil {
		return fmt.Errorf("seed demo gallery: %w", err)
	}

	mediaRows := []struct {
		id, filename, mime, externalURL string
		sortOrder                       int
		duration                        float64
	}{
		{demoCoverID.String(), "emma-james-01.jpg", "image/jpeg", "https://images.unsplash.com/photo-1519741497674-611481863552?auto=format&fit=crop&w=1800&q=88", 1, 0},
		{demoPhotoID.String(), "emma-james-02.jpg", "image/jpeg", "https://images.unsplash.com/photo-1511285560929-80b456fea0bc?auto=format&fit=crop&w=1800&q=88", 2, 0},
		{demoVideoID.String(), "emma-james-film.mp4", "video/mp4", "https://storage.googleapis.com/coverr-main/mp4/Mt_Baker.mp4", 3, 31.0},
	}
	for _, item := range mediaRows {
		if _, err := database.ExecContext(ctx, `
			INSERT INTO media (id, gallery_id, original_filename, mime_type, file_size, storage_key, external_url, processing_status, sort_order, duration_seconds)
			VALUES ($1, $2, $3, $4, 0, $5, $6, 'READY', $7, $8)
			ON CONFLICT (id) DO UPDATE SET
				gallery_id = EXCLUDED.gallery_id, original_filename = EXCLUDED.original_filename,
				mime_type = EXCLUDED.mime_type, storage_key = EXCLUDED.storage_key,
				external_url = EXCLUDED.external_url, processing_status = EXCLUDED.processing_status,
				sort_order = EXCLUDED.sort_order, duration_seconds = EXCLUDED.duration_seconds, updated_at = CURRENT_TIMESTAMP
		`, uuid.MustParse(item.id), demoGalleryID, item.filename, item.mime, "demo/"+item.filename, item.externalURL, item.sortOrder, item.duration); err != nil {
			return fmt.Errorf("seed demo media %s: %w", item.filename, err)
		}
	}
	return nil
}

var (
	demoUserID    = uuid.MustParse("55555555-5555-4555-8555-555555555555")
	demoGalleryID = uuid.MustParse("66666666-6666-4666-8666-666666666666")
	demoCoverID   = uuid.MustParse("77777777-7777-4777-8777-777777777777")
	demoPhotoID   = uuid.MustParse("88888888-8888-4888-8888-888888888888")
	demoVideoID   = uuid.MustParse("99999999-9999-4999-8999-999999999999")
)