package netboxgo

import (
	"context"
	"fmt"
	"net/http"
	"net/url"
	"time"

	"github.com/gorilla/schema"
)

type VRFsService service

// NewVRF is used for the return values from Netbox API ipam_vrfs_create
type NewVRF struct {
	Name          string      `json:"name"`
	Rd            string      `json:"rd"`
	Tenant        int         `json:"tenant"`
	EnforceUnique bool        `json:"enforce_unique"`
	Description   string      `json:"description"`
	Tags          []string    `json:"tags"`
	CustomFields  interface{} `json:"custom_fields"`
}

// VRFs is used for the return value from NetBox API ipam_vrfs_list
type VRFs struct {
	Count    int    `json:"count"`
	Next     string `json:"next"`
	Previous string `json:"previous"`
	Results  []struct {
		ID     int    `json:"id"`
		Name   string `json:"name"`
		Rd     string `json:"rd"`
		Tenant struct {
			ID   int    `json:"id"`
			URL  string `json:"url"`
			Name string `json:"name"`
			Slug string `json:"slug"`
		} `json:"tenant"`
		EnforceUnique  bool        `json:"enforce_unique"`
		Description    string      `json:"description"`
		Tags           []string    `json:"tags"`
		DisplayName    string      `json:"display_name"`
		CustomFields   interface{} `json:"custom_fields"`
		Created        string      `json:"created"`
		LastUpdated    time.Time   `json:"last_updated"`
		IpaddressCount int         `json:"ipaddress_count"`
		PrefixCount    int         `json:"prefix_count"`
	} `json:"results"`
}

// VRFFilter is used to filter out returned object from Netbox API ipam_vrfs_list
type VRFFilter struct {
	Offset int64 `schema:"offset,omitempty"`
	Limit  int64 `schema:"limit,omitempty"`

	// User specific filters
	Name          string `schema:"name,omitempty"`
	RD            string `schema:"rd,omitempty"`
	EnforceUnique string `schema:"enforce_unique,omitempty"`
	TenantGroupID string `schema:"tenant_group_id,omitempty"`
	TenantGroup   string `schema:"tenant_group,omitempty"`
	TenantID      string `schema:"tenant_id,omitempty"`
	Tenant        string `schema:"tenant,omitempty"`
	IDIn          string `schema:"id__in,omitempty"`
	Q             string `schema:"q,omitempty"`
	Tag           string `schema:"tag,omitempty"`
}

const vrfsPath = ipamPath + "/vrfs"

// List vrfs. VRFFilter is used to list based on filter queries.
func (s *VRFsService) List(ctx context.Context, f *VRFFilter) (*VRFs, error) {
	var vrfs VRFs
	var query string
	var req *http.Request
	var err error

	encoder := schema.NewEncoder()

	form := url.Values{}
	err = encoder.Encode(f, form)
	if err != nil {
		return &vrfs, err
	}
	query = form.Encode()

	req, err = s.client.newRequest(ctx, "GET", vrfsPath, query, nil)
	if err != nil {
		return &vrfs, err
	}

	_, err = s.client.do(req, &vrfs)
	if err != nil {
		return &vrfs, err
	}

	return &vrfs, nil
}

// Create a device
func (s *VRFsService) Create(ctx context.Context, c *NewVRF) error {
	var err error
	var req *http.Request

	req, err = s.client.newRequest(ctx, "POST", vrfsPath, "", c)
	if err != nil {
		return fmt.Errorf("unable to create request: %w", err)
	}

	_, err = s.client.do(req, nil)
	if err != nil {
		return fmt.Errorf("unable to do request: %w", err)
	}

	return nil
}

// // Update a device
// func (s *VRFsService) Update(ctx context.Context, id string, c *UpdateVRF) error {
// 	var req *http.Request
// 	var err error

// 	path := fmt.Sprintf("%s/%s", vrfsPath, id)

// 	req, err = s.client.newRequest(ctx, "PATCH", path, "", c)
// 	if err != nil {
// 		return fmt.Errorf("unable to create request: %w", err)
// 	}

// 	_, err = s.client.do(req, nil)
// 	if err != nil {
// 		return fmt.Errorf("unable to do request: %w", err)
// 	}

// 	return nil
// }