using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging;
using RStein.TOML;

namespace ForgejoReleaseSync.Services;

public class RepositoryConfig
{
    public List<RepoSyncConfig> Repositories { get; set; } = [];
}

public class RepoSyncConfig
{
    public required string Name { get; set; }
    public required string GithubUrl { get; set; }
    public required string ForgejoUrl { get; set; }
    public required string IncludeRegex { get; set; }
    public required string ExcludeRegex { get; set; }
}

public abstract class RepoConfigLoader()
{
    public static async Task<RepositoryConfig> LoadConfigAsync(string configPath,CancellationToken token = default)
    {
        try
        {
            var toml = await File.ReadAllTextAsync(configPath, token);

            var tables = await TomlSerializer.DeserializeAsync(toml, token);

            var result = new RepositoryConfig();
        
            foreach (var table in tables)
            {
                if (table.Value is not TomlArray tableValues)
                    continue;

                foreach (var content in tableValues)
                {
                    if (content is not TomlTable fields)
                        continue;
                
                    result.Repositories.Add(new RepoSyncConfig
                    {
                        Name = table.Key.ToString(),
                        GithubUrl = GetRequiredString(fields, "GithubUrl"),
                        ForgejoUrl = GetRequiredString(fields, "ForgejoUrl"),
                        IncludeRegex = GetRequiredString(fields, "IncludeRegex"),
                        ExcludeRegex = GetRequiredString(fields, "ExcludeRegex")
                    });
                }
            }
            return result;
        }
        catch (Exception e)
        {
            throw new InvalidDataException("Failed to load configuration file", e);
        }
        
    }
    
    private static string GetRequiredString(
        TomlTable table,
        string key)
    {
        return (string?)table[key]
               ?? throw new InvalidDataException(
                   $"Missing required configuration property: {key}");
    }
}