// Copyright (c) Mainflux
// SPDX-License-Identifier: Apache-2.0

package api

import (
	"github.com/mainflux/mainflux/internal/api"
	"github.com/mainflux/mainflux/internal/apiutil"
	mfclients "github.com/mainflux/mainflux/pkg/clients"
)

const maxLimitSize = 100

type createClientReq struct {
	client mfclients.Client
	token  string
}

func (req createClientReq) validate() error {
	if len(req.client.Name) > api.MaxNameSize {
		return apiutil.ErrNameSize
	}

	return req.client.Validate()
}

type viewClientReq struct {
	token string
	id    string
}

func (req viewClientReq) validate() error {
	if req.token == "" {
		return apiutil.ErrBearerToken
	}
	if req.id == "" {
		return apiutil.ErrMissingID
	}

	return nil
}

type viewProfileReq struct {
	token string
}

func (req viewProfileReq) validate() error {
	if req.token == "" {
		return apiutil.ErrBearerToken
	}

	return nil
}

type listClientsReq struct {
	token      string
	status     mfclients.Status
	offset     uint64
	limit      uint64
	name       string
	tag        string
	identity   string
	visibility string
	owner      string
	sharedBy   string
	metadata   mfclients.Metadata
}

func (req listClientsReq) validate() error {
	if req.token == "" {
		return apiutil.ErrBearerToken
	}
	if req.limit > maxLimitSize || req.limit < 1 {
		return apiutil.ErrLimitSize
	}
	if req.visibility != "" &&
		req.visibility != api.AllVisibility &&
		req.visibility != api.MyVisibility &&
		req.visibility != api.SharedVisibility {
		return apiutil.ErrInvalidVisibilityType
	}

	return nil
}

type listMembersByObjectReq struct {
	mfclients.Page
	token      string
	objectKind string
	objectID   string
}

func (req listMembersByObjectReq) validate() error {
	if req.token == "" {
		return apiutil.ErrBearerToken
	}
	if req.objectID == "" {
		return apiutil.ErrMissingID
	}
	if req.objectKind == "" {
		return apiutil.ErrMissingMemberKind
	}

	return nil
}

type updateClientReq struct {
	token    string
	id       string
	Name     string             `json:"name,omitempty"`
	Metadata mfclients.Metadata `json:"metadata,omitempty"`
}

func (req updateClientReq) validate() error {
	if req.token == "" {
		return apiutil.ErrBearerToken
	}
	if req.id == "" {
		return apiutil.ErrMissingID
	}

	return nil
}

type updateClientTagsReq struct {
	id    string
	token string
	Tags  []string `json:"tags,omitempty"`
}

func (req updateClientTagsReq) validate() error {
	if req.token == "" {
		return apiutil.ErrBearerToken
	}
	if req.id == "" {
		return apiutil.ErrMissingID
	}

	return nil
}

type updateClientOwnerReq struct {
	id    string
	token string
	Owner string `json:"owner,omitempty"`
}

func (req updateClientOwnerReq) validate() error {
	if req.token == "" {
		return apiutil.ErrBearerToken
	}
	if req.id == "" {
		return apiutil.ErrMissingID
	}

	return nil
}

type updateClientIdentityReq struct {
	token    string
	id       string
	Identity string `json:"identity,omitempty"`
}

func (req updateClientIdentityReq) validate() error {
	if req.token == "" {
		return apiutil.ErrBearerToken
	}
	if req.id == "" {
		return apiutil.ErrMissingID
	}

	return nil
}

type updateClientSecretReq struct {
	token     string
	OldSecret string `json:"old_secret,omitempty"`
	NewSecret string `json:"new_secret,omitempty"`
}

func (req updateClientSecretReq) validate() error {
	if req.token == "" {
		return apiutil.ErrBearerToken
	}

	return nil
}

type changeClientStatusReq struct {
	token string
	id    string
}

func (req changeClientStatusReq) validate() error {
	if req.token == "" {
		return apiutil.ErrBearerToken
	}
	if req.id == "" {
		return apiutil.ErrMissingID
	}

	return nil
}

type loginClientReq struct {
	Identity string `json:"identity,omitempty"`
	Secret   string `json:"secret,omitempty"`
}

func (req loginClientReq) validate() error {
	if req.Identity == "" {
		return apiutil.ErrMissingIdentity
	}
	if req.Secret == "" {
		return apiutil.ErrMissingSecret
	}

	return nil
}

type tokenReq struct {
	RefreshToken string `json:"refresh_token,omitempty"`
}

func (req tokenReq) validate() error {
	if req.RefreshToken == "" {
		return apiutil.ErrBearerToken
	}

	return nil
}

type passwResetReq struct {
	Email string `json:"email"`
	Host  string `json:"host"`
}

func (req passwResetReq) validate() error {
	if req.Email == "" {
		return apiutil.ErrMissingEmail
	}
	if req.Host == "" {
		return apiutil.ErrMissingHost
	}

	return nil
}

type resetTokenReq struct {
	Token    string `json:"token"`
	Password string `json:"password"`
	ConfPass string `json:"confirm_password"`
}

func (req resetTokenReq) validate() error {
	if req.Password == "" {
		return apiutil.ErrMissingPass
	}
	if req.ConfPass == "" {
		return apiutil.ErrMissingConfPass
	}
	if req.Token == "" {
		return apiutil.ErrBearerToken
	}
	if req.Password != req.ConfPass {
		return apiutil.ErrInvalidResetPass
	}

	return nil
}

type assignUsersReq struct {
	token    string
	groupID  string
	Relation string   `json:"relation"`
	UserIDs  []string `json:"user_ids"`
}

func (req assignUsersReq) validate() error {
	if req.token == "" {
		return apiutil.ErrBearerToken
	}

	if req.Relation == "" {
		return apiutil.ErrMissingRelation
	}

	if req.groupID == "" {
		return apiutil.ErrMissingID
	}

	if len(req.UserIDs) == 0 {
		return apiutil.ErrEmptyList
	}

	return nil
}

type unassignUsersReq struct {
	token    string
	groupID  string
	Relation string   `json:"relation"`
	UserIDs  []string `json:"user_ids"`
}

func (req unassignUsersReq) validate() error {
	if req.token == "" {
		return apiutil.ErrBearerToken
	}

	if req.groupID == "" {
		return apiutil.ErrMissingID
	}

	if req.Relation == "" {
		return apiutil.ErrMissingRelation
	}
	if len(req.UserIDs) == 0 {
		return apiutil.ErrEmptyList
	}

	return nil
}