package request

import (
	"enaklo-pos-be/internal/common/mycontext"
	"enaklo-pos-be/internal/constants/role"
	"enaklo-pos-be/internal/entity"
	"math/rand"
	"strings"
	"time"

	"github.com/go-playground/validator/v10"
)

type User struct {
	Name        string    `json:"name" validate:"required"`
	Email       string    `json:"email" validate:"required,email"`
	Password    string    `json:"password"`
	PartnerID   *int64    `json:"partner_id"`
	SiteID      *int64    `json:"site_id"`
	RoleID      role.Role `json:"role_id" validate:"required"`
	NIK         string    `json:"nik"`
	UserType    string    `json:"user_type"`
	PhoneNumber string    `json:"phone_number"`
}

func (e *User) Validate() error {
	validate := validator.New()
	if err := validate.Struct(e); err != nil {
		return err
	}

	return nil
}

func RandomEmail() string {
	const charset = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
	const length = 8

	seededRand := rand.New(rand.NewSource(time.Now().UnixNano()))
	randomString := make([]byte, length)

	for i := range randomString {
		randomString[i] = charset[seededRand.Intn(len(charset))]
	}

	return string(randomString) + "@example.com"
}

func (u *User) ToEntity(ctx mycontext.Context, userType string) *entity.User {
	if !ctx.IsAdmin() {
		u.PartnerID = ctx.GetPartnerID()
	}

	if u.Email == "" {
		u.Email = RandomEmail()
	}

	return &entity.User{
		Name:        u.Name,
		Email:       strings.ToLower(u.Email),
		Password:    u.Password,
		RoleID:      role.Role(u.RoleID),
		PartnerID:   u.PartnerID,
		SiteID:      u.SiteID,
		NIK:         u.NIK,
		UserType:    userType,
		PhoneNumber: u.PhoneNumber,
	}
}

type Customer struct {
	Name        string `json:"name" binding:"required"`
	Email       string `json:"email" binding:"required,email"`
	PhoneNumber string `json:"phone_number" binding:"required"`
	RoleID      int64  `json:"role_id" binding:"required"`
	SiteID      *int64 `json:"site_id" binding:"required"`
}

func (c *Customer) ToEntity(ctx mycontext.Context, userType string) entity.Customer {
	return entity.Customer{
		Name:        c.Name,
		Email:       c.Email,
		PhoneNumber: c.PhoneNumber,
		SiteID:      c.SiteID,
		PartnerID:   ctx.GetPartnerID(),
	}
}

type UserParam struct {
	Search    string `form:"search" json:"search" example:"admin,branch1"`
	Name      string `form:"name" json:"name" example:"Admin 1"`
	RoleID    int64  `form:"role_id" json:"role_id" example:"1"`
	PartnerID int64  `form:"partner_id" json:"partner_id" example:"1"`
	SiteID    int64  `form:"site_id" json:"site_id" example:"1"`
	Limit     int    `form:"limit,default=10" json:"limit" example:"10"`
	Offset    int    `form:"offset,default=0" json:"offset" example:"0"`
}

func (p *UserParam) ToEntity(ctx mycontext.Context) entity.UserSearch {
	partnerID := p.PartnerID
	siteID := p.SiteID

	if !ctx.IsAdmin() {
		partnerID = *ctx.GetPartnerID()
	}

	if ctx.GetSiteID() != nil {
		siteID = *ctx.GetSiteID()
	}

	return entity.UserSearch{
		Search:    p.Search,
		Name:      p.Name,
		RoleID:    p.RoleID,
		PartnerID: partnerID,
		SiteID:    siteID,
		Limit:     p.Limit,
		Offset:    p.Offset,
	}
}

type CustomerParam struct {
	Search    string `form:"search" json:"search" example:"admin,branch1"`
	Name      string `form:"name" json:"name" example:"Admin 1"`
	RoleID    int64  `form:"role_id" json:"role_id" example:"1"`
	PartnerID int64  `form:"partner_id" json:"partner_id" example:"1"`
	SiteID    int64  `form:"site_id" json:"site_id" example:"1"`
	Limit     int    `form:"limit,default=10" json:"limit" example:"10"`
	Offset    int    `form:"offset,default=0" json:"offset" example:"0"`
}

func (p *CustomerParam) ToEntity(ctx mycontext.Context) entity.CustomerSearch {
	partnerID := p.PartnerID
	siteID := p.SiteID

	if !ctx.IsAdmin() {
		partnerID = *ctx.GetPartnerID()
	}

	if ctx.GetSiteID() != nil {
		siteID = *ctx.GetSiteID()
	}

	return entity.CustomerSearch{
		Search:    p.Search,
		Name:      p.Name,
		RoleID:    p.RoleID,
		PartnerID: partnerID,
		SiteID:    siteID,
		Limit:     p.Limit,
		Offset:    p.Offset,
	}
}

type UserRegister struct {
	Name        string `json:"name" validate:"required" binding:"required"`
	Email       string `json:"email" validate:"required" binding:"required"`
	PhoneNumber string `json:"phone_number" validate:"required" binding:"required"`
	Password    string `json:"password" validate:"required" binding:"required"`
}

func (e *UserRegister) Validate() error {
	validate := validator.New()
	if err := validate.Struct(e); err != nil {
		return err
	}

	return nil
}

func (u *UserRegister) ToEntity() *entity.User {
	return &entity.User{
		Name:        u.Name,
		Email:       strings.ToLower(u.Email),
		PhoneNumber: u.PhoneNumber,
		Password:    u.Password,
	}
}