using GermanApp.Domain.Entities;
using GermanApp.Infrastructure.Data.DbContext;
using Microsoft.EntityFrameworkCore;

namespace GermanApp.Infrastructure.Data.SeedData;

/// <summary>
/// Extension methods for seeding the database.
/// </summary>
public static class SeedDataExtension
{
    /// <summary>
    /// Seeds the database with initial data.
    /// </summary>
    /// <param name="app">The web application</param>
    public static async Task SeedDatabaseAsync(this WebApplication app)
    {
        using var scope = app.Services.CreateScope();
        var dbContext = scope.ServiceProvider.GetRequiredService<AppDbContext>();

        // Apply pending migrations
        dbContext.Database.Migrate();

        // Only seed if there are no users
        if (!dbContext.Users.Any())
        {
            // Seed CEFR levels first
            var levels = new[]
            {
                Level.Create("Beginner A1", "A1", 1),
                Level.Create("Elementary A2", "A2", 2),
                Level.Create("Intermediate B1", "B1", 3),
                Level.Create("Upper Intermediate B2", "B2", 4),
                Level.Create("Advanced C1", "C1", 5)
            };
            dbContext.Levels.AddRange(levels);
            await dbContext.SaveChangesAsync();

            // Seed an admin user
            var adminUser = User.Create(
                "admin",
                "admin@deutschlernen.com",
                "$2a$11$N9qo8uLOickgx2ZMRZoMy.Mrq9Hq4yVJyX2sX7z3J0J9z6J9Z2K4a" // bcrypt hash of "Admin@123!"
            );
            adminUser.UpdateLevel("C1");
            dbContext.Users.Add(adminUser);

            // Seed a test user
            var testUser = User.Create(
                "testuser",
                "test@deutschlernen.com",
                "$2a$11$N9qo8uLOickgx2ZMRZoMy.Mrq9Hq4yVJyX2sX7z3J0J9z6J9Z2K4a" // bcrypt hash of "Test@123!"
            );
            dbContext.Users.Add(testUser);

            // Seed some lessons
            var lessons = new[]
            {
                Lesson.Create(1, "Greetings", 1, "Greetings", "Basic German greetings and introductions"),
                Lesson.Create(1, "Numbers", 2, "Numbers", "German numbers 1-100"),
                Lesson.Create(2, "Grammar Basics", 1, "Grammar", "Basic German grammar rules"),
                Lesson.Create(2, "Everyday Phrases", 2, "Phrases", "Common phrases for daily conversations"),
                Lesson.Create(5, "Advanced Grammar", 1, "Grammar", "Complex German grammar")
            };
            dbContext.Lessons.AddRange(lessons);

            await dbContext.SaveChangesAsync();

            Console.WriteLine("Database seeded with levels, admin user, test user, and sample lessons.");
        }
    }
}