using System.Text.Json;
using MycroForge.CLI.Extensions;

namespace MycroForge.CLI;

public class ProjectContext
{
    public string RootDirectory { get; private set; } = Environment.CurrentDirectory;
    public string ConfigPath => Path.Combine(RootDirectory, "m4g.json");
    public ProjectConfig Config { get; private set; } = default!;

    private readonly ArgsContext _argsContext;

    public ProjectContext(ArgsContext argsContext)
    {
        _argsContext = argsContext;
    }

    public async Task LoadConfig(bool force = false)
    {
        if (_argsContext.Args
                is ["init", ..]
                or ["-?", ..]
                or ["-h", ..]
                or ["--help"]
                or ["--version"] && !force)
            return;

        if (!File.Exists(ConfigPath))
            throw new FileNotFoundException($"File {ConfigPath} does not exist.");

        Config = (await JsonSerializer.DeserializeAsync<ProjectConfig>(
            File.OpenRead(ConfigPath),
            Shared.DefaultJsonSerializerOptions.CamelCasePrettyPrint
        ))!;
    }

    public void ChangeDirectory(string path)
    {
        Directory.SetCurrentDirectory(path);
        RootDirectory = path;
    }

    public async Task CreateFile(string path, params string[] content)
    {
        var fullPath = Path.Combine(RootDirectory, path);
        var fileInfo = new FileInfo(fullPath);

        if (fileInfo.Exists) return;

        Directory.CreateDirectory(fileInfo.Directory!.FullName);
        await File.WriteAllTextAsync(fullPath, string.Join("\n", content));
        await Bash.ExecuteAsync($"chmod 777 {fullPath}");
    }

    public async Task WriteFile(string path, params string[] content)
    {
        var fullPath = Path.Combine(RootDirectory, path);
        var fileInfo = new FileInfo(fullPath);
        Directory.CreateDirectory(fileInfo.Directory!.FullName);
        await File.WriteAllTextAsync(fullPath, string.Join("\n", content));
    }

    public async Task<string> ReadFile(string path)
    {
        var fullPath = Path.Combine(RootDirectory, path);
        var fileInfo = new FileInfo(fullPath);

        if (!fileInfo.Exists)
            throw new Exception($"File {fullPath} does not exist.");

        return await File.ReadAllTextAsync(fullPath);
    }

    public async Task SaveConfig()
    {
        if (Config is not null)
        {
            var json = await Config.SerializeAsync(Shared.DefaultJsonSerializerOptions.CamelCasePrettyPrint);
            await File.WriteAllTextAsync(ConfigPath, json);
        }
    }
}