package contracts

import (
	"errors"
	"log"

	"github.com/samber/lo"
)

// 定义错误码
type Errno struct {
	Code int    `json:"code"`
	Msg  string `json:"msg"`
}

func (err Errno) Error() string {
	return err.Msg
}

// 定义错误
type Err struct {
	Code   int    `json:"code"` // 错误码
	Msg    string `json:"msg"`  // 展示给用户看的
	Errord string `json:"-"`    // 内部错误信息
	alert  bool   `json:"-"`    // 是否显示内部错误信息
}

func (err Err) Error() string {
	defer log.Println(err.Code, err.Msg, err.Errord)

	return lo.Ternary(err.alert && err.Errord != "", err.Errord, err.Msg)
}

var ErrFuncNotImplemented = errors.New("func not implemented")

// 错误码设计
// 第一位表示错误级别, 1 为系统错误, 2 为普通错误
// 第二三位表示服务模块代码
// 第四五位表示具体错误代码
var (
	OK                  = &Errno{Code: 0, Msg: "操作成功!"}
	UserRequestApproval = &Errno{Code: 1, Msg: "已提交审批申请"}

	// 系统错误, 前缀为 100
	InternalServerError  = &Errno{Code: 10001, Msg: "内部服务器错误"}
	ErrBind              = &Errno{Code: 10002, Msg: "请求参数错误"}
	ErrTokenSign         = &Errno{Code: 10003, Msg: "签名 jwt 时发生错误"}
	ErrEncrypt           = &Errno{Code: 10004, Msg: "加密用户密码时发生错误"}
	ErrNotFound          = &Errno{Code: 10005, Msg: "Not Found"}
	ErrFuncNotFound      = &Errno{Code: 10006, Msg: "处理函数不存在"}
	ErrResNotFound       = &Errno{Code: 10007, Msg: "资源不存在"}
	ErrResFieldNotFound  = &Errno{Code: 10008, Msg: "资源字段不存在"}
	ErrFileUpload        = &Errno{Code: 10009, Msg: "文件上传错误"}
	ErrFileNotFound      = &Errno{Code: 10010, Msg: "文件不存在"}
	ErrConfigureNotFound = &Errno{Code: 10011, Msg: "配置不存在"}
	ErrConfigureInvalid  = &Errno{Code: 10012, Msg: "配置参数无效"}
	ErrParamRequired     = &Errno{Code: 10013, Msg: "参数不存在"}
	ErrParamInvalid      = &Errno{Code: 10014, Msg: "参数无效"}

	// service 错误
	ErrServiceDecode           = &Errno{Code: 10101, Msg: "解析 base62param 错误"}
	ErrServiceInitInfoByList   = &Errno{Code: 10102, Msg: "初始化列表错误"}
	ErrServiceInitInitRelation = &Errno{Code: 10103, Msg: "初始化资源关联错误"}
	ErrServiceInitInitField    = &Errno{Code: 10103, Msg: "初始化资源关联错误"}

	// 数据库错误, 前缀为 201
	ErrDatabase      = &Errno{Code: 20100, Msg: "数据库错误"}
	ErrDBFill        = &Errno{Code: 20101, Msg: "从数据库填充 struct 时发生错误"}
	ErrDBQuery       = &Errno{Code: 20102, Msg: "数据查询错误"}
	ErrDBStore       = &Errno{Code: 20103, Msg: "数据保存错误"}
	ErrDBUpdate      = &Errno{Code: 20104, Msg: "数据更新错误"}
	ErrDBDelete      = &Errno{Code: 20105, Msg: "数据删除错误"}
	ErrDBTransaction = &Errno{Code: 20106, Msg: "数据库事务错误"}

	// 认证错误, 前缀是 202
	ErrTokenValidation = &Errno{Code: 20201, Msg: "验证失败"}
	ErrTokenInvalid    = &Errno{Code: 20202, Msg: "token 无效"}
	ErrTokenExpired    = &Errno{Code: 20203, Msg: "token 过期"}
	ErrTokenNotFound   = &Errno{Code: 20204, Msg: "token 不存在"}

	// 用户错误, 前缀为 203
	ErrUserNotLogin         = &Errno{Code: 20300, Msg: "请先登录"}
	ErrUserNotFound         = &Errno{Code: 20301, Msg: "用户没找到"}
	ErrUserPassword         = &Errno{Code: 20302, Msg: "用户名或密码错误"}
	ErrUserAuth             = &Errno{Code: 20303, Msg: "无权限"}
	ErrUserReadAuth         = &Errno{Code: 20304, Msg: "无查询权限"}
	ErrUserWriteAuth        = &Errno{Code: 20305, Msg: "无写入权限"}
	ErrUserIncomplete       = &Errno{Code: 20306, Msg: "用户信息不完善"}
	ErrUserWechatBound      = &Errno{Code: 20307, Msg: "微信号绑定失败"}
	ErrUserWechatPhoneBound = &Errno{Code: 20308, Msg: "该微信号已绑定手机"}
	ErrUserWechatRegister   = &Errno{Code: 20309, Msg: "通过微信注册失败"}

	// 审批错误, 前缀是 204
	ErrUserApprovalFlowNotFound     = &Errno{Code: 20401, Msg: "审批节点不存在"}
	ErrUserApprovalNextFlowNotFound = &Errno{Code: 20402, Msg: "下级审批节点不存在"}
	ErrUserApprovalFlowDone         = &Errno{Code: 20403, Msg: "该审批已结束"}
	ErrUserApprovalFlowCancelled    = &Errno{Code: 20404, Msg: "该审批已撤销"}
	ErrUserApprovalMaxExecuteDeep   = &Errno{Code: 20405, Msg: "该审批已超过自动扭转最大深度撤销"}
	ErrUserApprovalExists           = &Errno{Code: 20406, Msg: "该审批流已被占用"}

	// 请求第三个接口
	ErrApiRequest   = &Errno{Code: 20501, Msg: "Api Request Error"}
	ErrApiResponsed = &Errno{Code: 20502, Msg: "Api Responsed Error"}
	ErrApiAuth      = &Errno{Code: 20503, Msg: "Api Auth Error"}

	// 验证码错误,206
	ErrCaptcha         = &Errno{Code: 20601, Msg: "验证码生成器不存在"}
	ErrCaptchaGenerate = &Errno{Code: 20602, Msg: "验证码生成错误"}
	ErrCaptchaInvalid  = &Errno{Code: 20603, Msg: "验证码无效"}
	ErrCaptchaExpired  = &Errno{Code: 20604, Msg: "验证码已过期"}
	ErrCaptchaSend     = &Errno{Code: 20605, Msg: "验证码发送错误"}
	ErrCaptchaInterval = &Errno{Code: 20606, Msg: "验证码获取失败, 请稍后再试"}

	// Pkg 错误
	ErrPkgUnknown         = &Errno{Code: 20701, Msg: "pkg unknown"}
	ErrPkgInvalid         = &Errno{Code: 20702, Msg: "pkg invalid"}
	ErrPkgPlatformInvalid = &Errno{Code: 20703, Msg: "pkg platform invalid"}
	ErrPkgUpgrade         = &Errno{Code: 20704, Msg: "pkg upgrade fail"}
	ErrPkgRollback        = &Errno{Code: 20705, Msg: "pkg version rollback fail"}
	ErrPkgDownload        = &Errno{Code: 20706, Msg: "pkg download fail"}
	ErrPkgUpload          = &Errno{Code: 20707, Msg: "pkg upload fail"}
	ErrPkgBuild           = &Errno{Code: 20708, Msg: "pkg build fail"}
)

// 使用 错误码 和 error 创建新的 错误
func NewErr(errno *Errno, err error) *Err {
	return &Err{
		alert:  errno.Code == InternalServerError.Code,
		Code:   errno.Code,
		Msg:    errno.Error(),
		Errord: err.Error(),
	}
}

func NewMsgErr(errno *Errno, err error) *Err {
	return &Err{
		alert:  true,
		Code:   errno.Code,
		Msg:    errno.Error(),
		Errord: err.Error(),
	}
}