using UnityEditor;
using UnityEngine;

namespace BFEditor
{
    public static class GitUtils
    {
        /// <summary>
        /// 推送(标签也推送)
        /// </summary>
        /// <param name="path"></param>
        /// <param name="showDialog"></param>
        /// <returns></returns>
        public static bool GitPushWithTag(string branch = "", string path = "", bool showDialog = false)
        {
            return GitOperate("push origin" + branch + " --tags", path, showDialog, true);
        }

        /// <summary>
        /// 推送
        /// </summary>
        /// <param name="path"></param>
        /// <param name="showDialog"></param>
        /// <returns></returns>
        public static bool GitPush(string branch = "", string path = "", bool showDialog = false)
        {
            return GitOperate("push origin " + branch, path, showDialog, true);
        }

        /// <summary>
        /// 拉取
        /// </summary>
        /// <param name="path"></param>
        /// <param name="showDialog"></param>
        /// <returns></returns>
        public static bool GitPull(string branch = "", string path = "", bool showDialog = false)
        {
            return GitOperate("pull origin " + branch, path, showDialog, true);
        }

        /// <summary>
        /// 抓取
        /// </summary>
        /// <param name="path"></param>
        /// <param name="showDialog"></param>
        /// <returns></returns>
        public static bool GitFetch(string path = "", bool showDialog = false)
        {
            return GitOperate("fetch", path, showDialog);
        }

        /// <summary>
        /// 无论暂存与否的文件都提交,相当于将git add 和 git commit两步操作合并为一步,注意,只对已跟踪的文件有效
        /// </summary>
        /// <param name="path"></param>
        /// <param name="log"></param>
        /// <param name="showDialog"></param>
        /// <returns></returns>
        public static bool GitCommit(string path = "", string log = "no message", bool showDialog = false)
        {
            return GitOperate("commit -a -m " + "'" + log + "'", path, showDialog);
        }


        /// <summary>
        /// 合并
        /// </summary>
        /// <param name="src">被合并的分支</param>
        /// <param name="dst">要合并src的分支</param>
        /// <param name="path"></param>
        /// <param name="showDialog"></param>
        /// <returns></returns>
        public static bool GitMerge(string src, string dst, string path = "", bool showDialog = false)
        {
            bool res = GitSwitchBranch(dst, path);
            if (res)
            {
                return GitOperate("merge " + src, path, showDialog);
            }

            return false;
        }

        /// <summary>
        /// 创建分支
        /// </summary>
        /// <param name="branch"></param>
        /// <param name="path"></param>
        /// <param name="showDialog"></param>
        /// <returns></returns>
        public static bool GitCreateBranch(string branch, string path = "", bool showDialog = false)
        {
            return GitOperate("branch " + branch, path, showDialog);
        }

        /// <summary>
        /// 切换分支
        /// </summary>
        /// <param name="branch"></param>
        /// <param name="path"></param>
        /// <param name="showDialog"></param>
        /// <returns></returns>
        public static bool GitSwitchBranch(string branch, string path = "", bool showDialog = false)
        {
            return GitOperate("checkout " + branch, path, showDialog, true);
        }

        /// <summary>
        /// 创建并切换分支
        /// </summary>
        /// <param name="branch"></param>
        /// <param name="path"></param>
        /// <param name="showDialog"></param>
        /// <returns></returns>
        public static bool GitCreateAndSwitchBranch(string branch, string path = "", bool showDialog = false)
        {
            return GitOperate("checkout -b " + branch, path, showDialog, true);

        }

        /// <summary>
        /// 删除分支
        /// </summary>
        /// <param name="branch"></param>
        /// <param name="path"></param>
        /// <param name="showDialog"></param>
        /// <returns></returns>
        public static bool GitDeleteBranch(string branch, string path = "", bool showDialog = false)
        {
            return GitOperate("branch -d " + branch, path, showDialog);

        }

        /// <summary>
        /// 还原文件,仅对未暂存的文件有效,对于暂存的文件,应该先GitUnstageFiles,再GitRevertFiles
        /// </summary>
        /// <param name="path"></param>
        /// <param name="showDialog"></param>
        /// <param name="filenames"></param>
        /// <returns></returns>
        public static bool GitRevertFiles(string path = "", bool showDialog = false, params string[] filenames)
        {
            string args = "checkout --";
            for (int i = 0; i < filenames.Length; i++)
            {
                args += " " + filenames[i];
            }
            return GitOperate(args, path, showDialog);
        }

        public static bool GitTag(string tagName, string path = "", bool showDialog = false, string log = " ")
        {
            return GitOperate("tag -a " + tagName + " -m " + "'" + log + "'", path, showDialog);
        }

        /// <summary>
        ///重置当前分支
        /// </summary>
        /// <param name="path"></param>
        /// <param name="showDialog"></param>
        /// <returns></returns>
        public static bool GitResetHard(string path = "", bool showDialog = false)
        {
            return GitOperate("reset --hard HEAD", path, showDialog, true);
        }


        /// <summary>
        /// 取消暂存,仅仅是取消暂存
        /// </summary>
        /// <param name="path"></param>
        /// <param name="showDialog"></param>
        /// <param name="filenames">文件列表</param>
        /// <returns></returns>
        public static bool GitUnstageFiles(string path = "", bool showDialog = false, params string[] filenames)
        {
            string args = "reset HEAD";
            for (int i = 0; i < filenames.Length; i++)
            {
                args += " " + filenames[i];
            }
            return GitOperate(args, path, showDialog);
        }

        /// <summary>
        /// 将暂存区的文件提交,即已经git add的文件
        /// </summary>
        /// <param name="path"></param>
        /// <param name="log">日志信息</param>
        /// <param name="showDialog"></param>
        /// <returns></returns>
        public static bool GitCommitStaged(string path = "", string log = "no message", bool showDialog = false)
        {
            return GitOperate("commit -m " + "'" + log + "'", path, showDialog);
        }

        /// <summary>
        /// 查询Git状态
        /// </summary>
        /// <param name="path"></param>
        /// <returns></returns>
        public static bool GitStatus(string path = "")
        {
            return GitOperate("status", path);
        }

        /// <summary>
        /// 删除文件
        /// </summary>
        /// <param name="filename">删除文件的名称,可以是通配符</param>
        /// <param name="path"></param>
        /// <param name="showDialog"></param>
        /// <returns></returns>
        public static bool GitRemoveFile(string filename, string path = "", bool showDialog = false)
        {
            return GitOperate("rm " + filename, path, showDialog);
        }


        /// <summary>
        /// 批量添加到暂存区
        /// </summary>
        /// <param name="path"></param>
        /// <param name="options">
        /// ".":将修改的文件以及未跟踪文件添加到暂存区,但不包含删除的文件
        /// "-u":将被修改的已跟踪文件以及删除的文件添加到暂存区,但不包含未跟踪的文件
        /// "-A":"." 和 "-u"操作的集合
        /// 还可以是其它通配符
        /// </param>
        /// <returns></returns>
        public static bool GitAdd(string path = "", string options = "-A", bool showDialog = false)
        {
            var args = "add " + options;
            return GitOperate(args, path, showDialog);
        }


        /// <summary>
        /// 添加filenames到暂存区
        /// </summary>
        /// <param name="path"></param>
        /// <param name="showDialog"></param>
        /// <param name="filenames">文件列表</param>
        /// <returns></returns>
        public static bool GitAddFiles(string path, bool showDialog = false, params string[] filenames)
        {
            string args = "add";
            for (int i = 0; i < filenames.Length; i++)
            {
                args += " " + filenames[i];
            }
            return GitOperate(args, path, showDialog);
        }

        /// <summary>
        /// git操作
        /// </summary>
        /// <param name="args"></param>
        /// <param name="path"></param>
        /// <param name="showDialog"></param>
        /// <param name="ignoreError">是否忽略错误,这个参数主要用于切分支,切换分支无论如何都会有errormsg</param>
        /// <returns></returns>
        private static bool GitOperate(string args, string path = "", bool showDialog = false, bool ignoreError = false)
        {
            bool result = true;
            bool error = ignoreError;
            string errorMsg = "";
            if (!string.IsNullOrEmpty(path))
            {
                args = "-C " + path + " " + args;
            }

            BFEditorUtils.RunCommond("git", args, null, (outputMsg) =>
            {
                Debug.Log(outputMsg);
            }, (errormsg) =>
         {
                if (!ignoreError)
                {
                    error = true;
                    result = false;
                }

                Debug.LogError(errormsg);
                errorMsg = errormsg;
            });

            if (result)
            {
                string msg = string.Format("git {0} 执行成功", args);
                if (showDialog)
                {
                    EditorUtility.DisplayDialog("提示", msg, "确定");
                }
                else
                {
                    Debug.Log(msg);
                }
            }
            else
            {

                if (showDialog)
                {
                    if (error)
                    {
                        EditorUtility.DisplayDialog("Error", errorMsg, "确定");
                    }

                    if (!result)
                    {
                        EditorUtility.DisplayDialog("Error", string.Format("git {0} 执行失败", args), "确定");
                    }
                }
                else
                {
                    Debug.LogError(string.Format("git {0} 执行失败", args));
                }
            }
            return result;
        }

    }
}