using BetterGenshinImpact.Service;
using System;
using System.Collections.Generic;
using System.IO;
using System.Text.Json;
using BetterGenshinImpact.Core.Config;
using BetterGenshinImpact.GameTask.Common;
using BetterGenshinImpact.Model;
using Microsoft.Extensions.Logging;
using System.Text.Json.Serialization;
using System.Linq;

namespace BetterGenshinImpact.Core.Script.Project;

[Serializable]
public class Manifest
{
    public int ManifestVersion { get; set; } = 1;
    public string Name { get; set; } = string.Empty;
    public string Version { get; set; } = string.Empty;
    public string? BgiVersion { get; set; }
    public string Description { get; set; } = string.Empty;
    public List<Author> Authors { get; set; } = [];
    public string Main { get; set; } = string.Empty;
    public string SettingsUi { get; set; } = string.Empty;
    public string[] Scripts { get; set; } = [];
    public string[] Library { get; set; } = [];
    public string[] SavedFiles { get; set; } = [];
    public string[] HttpAllowedUrls { get; set; } = [];

    public static Manifest FromJson(string json)
    {
        var manifest = JsonSerializer.Deserialize<Manifest>(json, Global.ManifestJsonOptions) ?? throw new Exception("Failed to deserialize JSON.");
        return manifest;
    }

    public void Validate(string path)
    {
        if (string.IsNullOrWhiteSpace(Name))
        {
            throw new Exception("manifest.json: name is required.");
        }

        if (string.IsNullOrWhiteSpace(Version))
        {
            throw new Exception("manifest.json: version is required.");
        }

        if (string.IsNullOrWhiteSpace(Main))
        {
            throw new Exception("manifest.json: main script is required.");
        }

        if (!File.Exists(Path.Combine(path, Main)))
        {
            throw new FileNotFoundException("main js file not found.");
        }

        // 比较版本号大小 BgiVersion
        if (!string.IsNullOrWhiteSpace(BgiVersion) && Global.IsNewVersion(BgiVersion))
        {
            TaskControl.Logger.LogError("脚本 {Name} 版本号要求 {BgiVersion} 大于当前 BetterGI 版本号 {CurrentVersion} ， 脚本可能无法正常工作，请更新 BetterGI 版本！", Name, BgiVersion, Global.Version);
        }
    }

    public List<SettingItem> LoadSettingItems(string path)
    {
        if (string.IsNullOrWhiteSpace(SettingsUi))
        {
            return [];
        }

        var settingItems = new List<SettingItem>();
        var settingFile = Path.Combine(path, SettingsUi);
        if (File.Exists(settingFile))
        {
            var json = File.ReadAllText(settingFile);
            settingItems = JsonSerializer.Deserialize<List<SettingItem>>(json, ConfigService.JsonOptions) ?? [];
        }

        return settingItems;
    }

    [JsonIgnore]
    public string ShortDescription
    {
        get
        {
            var lines = this.Description.Split('\n');
            if (lines.Length > 6)
            {
                return String.Join('\n', lines.Take(6).Append("……"));
            }
            else
            {
                return this.Description;
            }
        }
    }
}