package admin

import (
	"context"
	"encoding/json"
	"fmt"
)

// User is GO representation of the json output of a user creation
type User struct {
	ID          string        `json:"user_id" url:"uid"`
	DisplayName string        `json:"display_name" url:"display-name"`
	Email       string        `json:"email" url:"email"`
	Suspended   *int          `json:"suspended" url:"suspended"`
	MaxBuckets  *int          `json:"max_buckets" url:"max-buckets"`
	Subusers    []interface{} `json:"subusers"`
	Keys        []struct {
		User      string `json:"user"`
		AccessKey string `json:"access_key" url:"access-key"`
		SecretKey string `json:"secret_key" url:"secret-key"`
	} `json:"keys"`
	SwiftKeys []interface{} `json:"swift_keys"`
	Caps      []struct {
		Type string `json:"type"`
		Perm string `json:"perm"`
	} `json:"caps"`
	OpMask              string        `json:"op_mask"`
	DefaultPlacement    string        `json:"default_placement"`
	DefaultStorageClass string        `json:"default_storage_class"`
	PlacementTags       []interface{} `json:"placement_tags"`
	BucketQuota         struct {
		Enabled    *bool `json:"enabled"`
		CheckOnRaw *bool `json:"check_on_raw"`
		MaxSize    *int  `json:"max_size"`
		MaxSizeKb  *int  `json:"max_size_kb"`
		MaxObjects *int  `json:"max_objects"`
	} `json:"bucket_quota"`
	UserQuota struct {
		Enabled    *bool `json:"enabled"`
		CheckOnRaw *bool `json:"check_on_raw"`
		MaxSize    *int  `json:"max_size"`
		MaxSizeKb  *int  `json:"max_size_kb"`
		MaxObjects *int  `json:"max_objects"`
	} `json:"user_quota"`
	TempURLKeys []interface{} `json:"temp_url_keys"`
	Type        string        `json:"type"`
	MfaIds      []interface{} `json:"mfa_ids"`
	KeyType     string        `url:"key-type"`
	Tenant      string        `url:"tenant"`
	GenerateKey *bool         `url:"generate-key"`
	PurgeData   *int          `url:"purge-data"`
}

// GetUser retrieves a given object store user
func (api *API) GetUser(ctx context.Context, user User) (*User, error) {
	if user.ID == "" {
		return nil, errMissingUserID
	}

	body, err := api.call(ctx, get, "/user", valueToURLParams(user))
	if err != nil {
		return nil, err
	}

	u := &User{}
	err = json.Unmarshal(body, u)
	if err != nil {
		return nil, fmt.Errorf("%s. %s. %w", unmarshalError, string(body), err)
	}

	return u, nil
}

// GetUsers lists all object store users
func (api *API) GetUsers(ctx context.Context) (*[]string, error) {
	body, err := api.call(ctx, get, "/metadata/user", nil)
	if err != nil {
		return nil, err
	}
	var users *[]string
	err = json.Unmarshal(body, &users)
	if err != nil {
		return nil, fmt.Errorf("%s. %s. %w", unmarshalError, string(body), err)
	}

	return users, nil
}

// CreateUser creates a user in the object store
func (api *API) CreateUser(ctx context.Context, user User) (*User, error) {
	if user.ID == "" {
		return nil, errMissingUserID
	}
	if user.DisplayName == "" {
		return nil, errMissingUserDisplayName
	}

	// Send request
	body, err := api.call(ctx, put, "/user", valueToURLParams(user))
	if err != nil {
		return nil, err
	}

	// Unmarshal response into Go type
	u := &User{}
	err = json.Unmarshal(body, u)
	if err != nil {
		return nil, fmt.Errorf("%s. %s. %w", unmarshalError, string(body), err)
	}

	return u, nil
}

// RemoveUser remove an user from the object store
func (api *API) RemoveUser(ctx context.Context, user User) error {
	if user.ID == "" {
		return errMissingUserID
	}

	_, err := api.call(ctx, delete, "/user", valueToURLParams(user))
	if err != nil {
		return err
	}

	return nil
}

// ModifyUser - http://docs.ceph.com/docs/latest/radosgw/adminops/#modify-user
func (api *API) ModifyUser(ctx context.Context, user User) (*User, error) {
	if user.ID == "" {
		return nil, errMissingUserID
	}

	body, err := api.call(ctx, post, "/user", valueToURLParams(user))
	if err != nil {
		return nil, err
	}

	u := &User{}
	err = json.Unmarshal(body, u)
	if err != nil {
		return nil, fmt.Errorf("%s. %s. %w", unmarshalError, string(body), err)
	}

	return u, nil
}