package app

import (
	"context"
	"strconv"
	"strings"

	"git.5iot.com/iotlcm-public/iotlcm-app/internal/consts"
	"git.5iot.com/iotlcm-public/iotlcm-app/internal/dao"
	"git.5iot.com/iotlcm-public/iotlcm-app/internal/model/entity"

	"github.com/gogf/gf/v2/errors/gerror"
)

type appRegisterSettings struct {
	DeptId int64
	RoleId int64
}

func appUserDeptOrDefault(user *entity.SysUser) int64 {
	if user != nil && user.DeptId > 0 {
		return user.DeptId
	}
	return 0
}

func appRegisterDeptOrDefault(ctx context.Context, tenantId string) int64 {
	deptId, err := appLoadRegisterDept(ctx, tenantId)
	if err != nil {
		return 0
	}
	return deptId
}

func appLoadRegisterSettings(ctx context.Context, tenantId string) (*appRegisterSettings, error) {
	if tenantId == "" {
		tenantId = consts.DefaultSystemTenantCode
	}

	deptId, err := appLoadRegisterDept(ctx, tenantId)
	if err != nil {
		return nil, err
	}
	if err = appValidateRegisterDept(ctx, tenantId, deptId); err != nil {
		return nil, err
	}

	roleValue, err := appTenantConfigValue(ctx, tenantId, consts.ConfigKeyAppRegisterRoleId)
	if err != nil {
		return nil, gerror.Wrap(err, "读取小程序默认角色失败")
	}
	roleId, err := appPositiveConfigInt64(roleValue, "小程序默认角色ID")
	if err != nil {
		return nil, err
	}
	if err = appValidateRegisterRole(ctx, tenantId, roleId); err != nil {
		return nil, err
	}

	return &appRegisterSettings{
		DeptId: deptId,
		RoleId: roleId,
	}, nil
}

func appLoadRegisterDept(ctx context.Context, tenantId string) (int64, error) {
	if tenantId == "" {
		tenantId = consts.DefaultSystemTenantCode
	}

	deptValue, err := appTenantConfigValue(ctx, tenantId, consts.ConfigKeyAppRegisterDeptId)
	if err != nil {
		return 0, gerror.Wrap(err, "读取小程序默认部门失败")
	}
	return appPositiveConfigInt64(deptValue, "小程序默认部门ID")
}

func appTenantConfigValue(ctx context.Context, tenantId string, key string) (string, error) {
	var config *entity.SysConfig
	if err := dao.SysConfig.Ctx(ctx).
		Where(dao.SysConfig.Columns().TenantId, tenantId).
		Where(dao.SysConfig.Columns().ConfigKey, key).
		OrderDesc(dao.SysConfig.Columns().ConfigId).
		Limit(1).
		Scan(&config); err != nil {
		return "", err
	}
	if config == nil || config.ConfigId == 0 {
		return "", nil
	}
	return strings.TrimSpace(config.ConfigValue), nil
}

func appPositiveConfigInt64(value string, label string) (int64, error) {
	value = strings.TrimSpace(value)
	if value == "" {
		return 0, gerror.Newf("%s未配置", label)
	}
	id, err := strconv.ParseInt(value, 10, 64)
	if err != nil || id <= 0 {
		return 0, gerror.Newf("%s配置不正确", label)
	}
	return id, nil
}

func appValidateRegisterDept(ctx context.Context, tenantId string, deptId int64) error {
	var dept *entity.SysDept
	if err := dao.SysDept.Ctx(ctx).
		Where(dao.SysDept.Columns().TenantId, tenantId).
		Where(dao.SysDept.Columns().DeptId, deptId).
		WhereNull(dao.SysDept.Columns().DeletedAt).
		Limit(1).
		Scan(&dept); err != nil {
		return gerror.Wrap(err, "校验小程序默认部门失败")
	}
	if dept == nil || dept.DeptId == 0 {
		return gerror.New("小程序默认部门不存在")
	}
	if strings.TrimSpace(dept.Status) != consts.SysDeptStatusNormal {
		return gerror.New("小程序默认部门已停用")
	}
	return nil
}

func appValidateRegisterRole(ctx context.Context, tenantId string, roleId int64) error {
	var role *entity.SysRole
	if err := dao.SysRole.Ctx(ctx).
		Where(dao.SysRole.Columns().TenantId, tenantId).
		Where(dao.SysRole.Columns().RoleId, roleId).
		WhereNull(dao.SysRole.Columns().DeletedAt).
		Limit(1).
		Scan(&role); err != nil {
		return gerror.Wrap(err, "校验小程序默认角色失败")
	}
	if role == nil || role.RoleId == 0 {
		return gerror.New("小程序默认角色不存在")
	}
	if strings.TrimSpace(role.Status) != consts.SysDeptStatusNormal {
		return gerror.New("小程序默认角色已停用")
	}
	return nil
}