package netboxgo

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

	"io/ioutil"
	"net/http"
	"net/url"

	"time"

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

//VirtualizationVirtualMachinesCreate is used to create new VirtualizationVirtualMachines
type VirtualizationVirtualMachinesCreate struct {
	ID     int    `json:"id"`
	Name   string `json:"name"`
	Status struct {
		Label string `json:"label"`
		Value int    `json:"value"`
	} `json:"status"`
	Site struct {
		ID   int    `json:"id"`
		URL  string `json:"url"`
		Name string `json:"name"`
		Slug string `json:"slug"`
	} `json:"site"`
	Cluster struct {
		ID                  int    `json:"id"`
		URL                 string `json:"url"`
		Name                string `json:"name"`
		VirtualmachineCount int    `json:"virtualmachine_count"`
	} `json:"cluster"`
	Role struct {
		ID                  int    `json:"id"`
		URL                 string `json:"url"`
		Name                string `json:"name"`
		Slug                string `json:"slug"`
		DeviceCount         int    `json:"device_count"`
		VirtualmachineCount int    `json:"virtualmachine_count"`
	} `json:"role"`
	Tenant struct {
		ID   int    `json:"id"`
		URL  string `json:"url"`
		Name string `json:"name"`
		Slug string `json:"slug"`
	} `json:"tenant"`
	Platform struct {
		ID                  int    `json:"id"`
		URL                 string `json:"url"`
		Name                string `json:"name"`
		Slug                string `json:"slug"`
		DeviceCount         int    `json:"device_count"`
		VirtualmachineCount int    `json:"virtualmachine_count"`
	} `json:"platform"`
	PrimaryIP struct {
		ID      int    `json:"id"`
		URL     string `json:"url"`
		Family  int    `json:"family"`
		Address string `json:"address"`
	} `json:"primary_ip"`
	PrimaryIP4 struct {
		ID      int    `json:"id"`
		URL     string `json:"url"`
		Family  int    `json:"family"`
		Address string `json:"address"`
	} `json:"primary_ip4"`
	PrimaryIP6 struct {
		ID      int    `json:"id"`
		URL     string `json:"url"`
		Family  int    `json:"family"`
		Address string `json:"address"`
	} `json:"primary_ip6"`
	Vcpus            int      `json:"vcpus"`
	Memory           int      `json:"memory"`
	Disk             int      `json:"disk"`
	Comments         string   `json:"comments"`
	LocalContextData string   `json:"local_context_data"`
	Tags             []string `json:"tags"`
	CustomFields     struct {
	} `json:"custom_fields"`
	ConfigContext struct {
		AdditionalProp1 string `json:"additionalProp1"`
		AdditionalProp2 string `json:"additionalProp2"`
		AdditionalProp3 string `json:"additionalProp3"`
	} `json:"config_context"`
	Created     string    `json:"created"`
	LastUpdated time.Time `json:"last_updated"`
}

//VirtualizationClustersCreate is used to create new VirtualizationClusters
type VirtualizationClustersCreate struct {
	ID   int    `json:"id"`
	Name string `json:"name"`
	Type struct {
		ID           int    `json:"id"`
		URL          string `json:"url"`
		Name         string `json:"name"`
		Slug         string `json:"slug"`
		ClusterCount int    `json:"cluster_count"`
	} `json:"type"`
	Group struct {
		ID           int    `json:"id"`
		URL          string `json:"url"`
		Name         string `json:"name"`
		Slug         string `json:"slug"`
		ClusterCount int    `json:"cluster_count"`
	} `json:"group"`
	Site struct {
		ID   int    `json:"id"`
		URL  string `json:"url"`
		Name string `json:"name"`
		Slug string `json:"slug"`
	} `json:"site"`
	Comments string `json:"comments"`
	Tags     []struct {
		ID    int    `json:"id"`
		URL   string `json:"url"`
		Name  string `json:"name"`
		Slug  string `json:"slug"`
		Color string `json:"color"`
	} `json:"tags"`
	CustomFields struct {
	} `json:"custom_fields"`
	Created             string    `json:"created"`
	LastUpdated         time.Time `json:"last_updated"`
	DeviceCount         int       `json:"device_count"`
	VirtualmachineCount int       `json:"virtualmachine_count"`
}

// VirtualizationClustersList is used to list VirtualizationClusters
type VirtualizationClustersList struct {
	Count    int    `json:"count"`
	Next     string `json:"next"`
	Previous string `json:"previous"`
	Results  []struct {
		ID   int    `json:"id"`
		Name string `json:"name"`
		Type struct {
			ID           int    `json:"id"`
			URL          string `json:"url"`
			Name         string `json:"name"`
			Slug         string `json:"slug"`
			ClusterCount int    `json:"cluster_count"`
		} `json:"type"`
		Group struct {
			ID           int    `json:"id"`
			URL          string `json:"url"`
			Name         string `json:"name"`
			Slug         string `json:"slug"`
			ClusterCount int    `json:"cluster_count"`
		} `json:"group"`
		Site struct {
			ID   int    `json:"id"`
			URL  string `json:"url"`
			Name string `json:"name"`
			Slug string `json:"slug"`
		} `json:"site"`
		Comments string `json:"comments"`
		Tags     []struct {
			ID    int    `json:"id"`
			URL   string `json:"url"`
			Name  string `json:"name"`
			Slug  string `json:"slug"`
			Color string `json:"color"`
		} `json:"tags"`
		CustomFields struct {
		} `json:"custom_fields"`
		Created             string    `json:"created"`
		LastUpdated         time.Time `json:"last_updated"`
		DeviceCount         int       `json:"device_count"`
		VirtualmachineCount int       `json:"virtualmachine_count"`
	} `json:"results"`
}

// ClusterFilter is used to filter out VirtualizationClusters
type ClusterFilter struct {
	Offset int64 `schema:"offset,omitempty"`
	Limit  int64 `schema:"limit,omitempty"`

	//User specific filters
	Name    string `schema:"name,omitempty"`
	Group   string `schema:"group,omitempty"`
	GroupID string `schema:"group_id,omitempty"`
	TypeID  string `schema:"type_id,omitempty"`
	Type    string `schema:"type,omitempty"`
	SiteID  string `schema:"site_id,omitempty"`
	Site    string `schema:"site,omitempty"`
	Tenant  string `schema:"tenant,omitempty"`
	IDIn    string `schema:"id__in,omitempty"`
	Q       string `schema:"q,omitempty"`
	Tag     string `schema:"tag,omitempty"`
}

// ListClusters returns Netbox virtualization_clusters
func (n *NetBox) ListClusters(i *VirtualizationClustersList, f *ClusterFilter) error {
	var 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/virtualization/clusters/?"+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
}

// CreateVirtualMachine creates VirtualMachines via Netbox API dcim_interfaces_create
func (n *NetBox) CreateVirtualMachine(v *VirtualizationClustersCreate) error {
	data, err := json.Marshal(v)
	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/virtualization/virtual-machines/", bytes.NewBuffer(data))
	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)
}