package netboxgo

import (
	"bytes"
	"crypto/tls"
	"encoding/json"

	//	"fmt"
	"io/ioutil"
	"net/http"
	"net/url"
	"time"

	"github.com/gorilla/schema"
	"github.com/pkg/errors"
)

// TenancyTenantsCreate is used for the return values from Netbox API tenancy_tenants_create
type TenancyTenantsCreate struct {
	Name         string   `json:"name"`
	Slug         string   `json:"slug"`
	Group        int      `json:"group"`
	Description  string   `json:"description"`
	Comments     string   `json:"comments"`
	Tags         []string `json:"tags"`
	CustomFields struct {
	} `json:"custom_fields"`
}

// TenancyTenantsList is used for the return value from NetBox API tenancy_tenants_list
type TenancyTenantsList struct {
	Count    int         `json:"count"`
	Next     string      `json:"next"`
	Previous interface{} `json:"previous"`
	Results  []struct {
		ID    int    `json:"id"`
		Name  string `json:"name"`
		Slug  string `json:"slug"`
		Group struct {
			ID   int    `json:"id"`
			URL  string `json:"url"`
			Name string `json:"name"`
			Slug string `json:"slug"`
		} `json:"group"`
		Description  string        `json:"description"`
		Comments     string        `json:"comments"`
		Tags         []interface{} `json:"tags"`
		CustomFields struct {
			AccountNumber   string      `json:"account_number"`
			AtlasCustNumber interface{} `json:"atlas_cust_number"`
			TextField       interface{} `json:"text_field"`
		} `json:"custom_fields"`
		Created             string      `json:"created"`
		LastUpdated         time.Time   `json:"last_updated"`
		CircuitCount        interface{} `json:"circuit_count"`
		DeviceCount         int         `json:"device_count"`
		IpaddressCount      interface{} `json:"ipaddress_count"`
		PrefixCount         int         `json:"prefix_count"`
		RackCount           interface{} `json:"rack_count"`
		SiteCount           int         `json:"site_count"`
		VirtualmachineCount interface{} `json:"virtualmachine_count"`
		VlanCount           int         `json:"vlan_count"`
		VrfCount            interface{} `json:"vrf_count"`
	} `json:"results"`
}

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

	// User specific filters
	Name    string `schema:"name,omitempty"`
	Slug    string `schema:"slug,omitempty"`
	Group   string `schema:"group,omitempty"`
	GroupID string `schema:"group_id,omitempty"`
	IDIn    string `schema:"id__in,omitempty"`
	Q       string `schema:"q,omitempty"`
	Tag     string `schema:"tag,omitempty"`
}

// ListTenants returns Netbox tenancy_tenants_list
func (n *NetBox) ListTenants(i *TenancyTenantsList, f *TenantFilter) error {
	encoder := schema.NewEncoder()

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

	transport := &http.Transport{
		TLSClientConfig: &tls.Config{InsecureSkipVerify: n.InsecureSkipVerify},
	}
	timeout := time.Duration(60 * time.Second)
	client := &http.Client{
		Timeout:   timeout,
		Transport: transport,
	}
	request, err := http.NewRequest("GET", n.RootURL+"/api/tenancy/tenants/?"+query, nil)
	if err != nil {
		return err
	}
	request.Header.Add("Accept", "application/json")
	request.Header.Add("Authorization", " Token "+n.Token)
	response, err := client.Do(request)
	if err != nil {
		return err
	}

	if response.StatusCode != http.StatusOK {
		return errors.Errorf("Error: response was: %d should be %d\n", response.StatusCode, http.StatusOK)
	}

	data, err := ioutil.ReadAll(response.Body)
	if err != nil {
		return err
	}

	err = response.Body.Close()
	if err != nil {
		return err
	}

	err = json.Unmarshal(data, &i)
	if err != nil {
		return err
	}
	return nil
}

// CreateTenants creates interfaces via Netbox API tenancy_tenants_create
func (n *NetBox) CreateTenants(i *TenancyTenantsCreate) error {
	vrfData, err := json.Marshal(i)
	if err != nil {
		return err
	}
	transport := &http.Transport{
		TLSClientConfig: &tls.Config{InsecureSkipVerify: n.InsecureSkipVerify},
	}
	timeout := time.Duration(60 * time.Second)
	client := &http.Client{
		Timeout:   timeout,
		Transport: transport,
	}
	request, err := http.NewRequest("POST", n.RootURL+"/api/tenancy/tenants/", bytes.NewBuffer(vrfData))
	if err != nil {
		return err
	}
	request.Header.Add("Accept", "application/json")
	request.Header.Add("Content-Type", "application/json")
	request.Header.Add("Authorization", " Token "+n.Token)
	response, err := client.Do(request)
	if err != nil {
		return err
	}
	err = response.Body.Close()
	if err != nil {
		return err
	}

	if response.StatusCode == http.StatusCreated {
		return nil
	}
	return errors.Errorf("Error: response was: %d should be %d\n", response.StatusCode, http.StatusCreated)
}