package netboxgo

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

	"github.com/gorilla/schema"
)

type InventoryItemsService service

type NewInventoryItem struct {
	Device       int      `json:"device"`
	Parent       int      `json:"parent"`
	Name         string   `json:"name"`
	Manufacturer int      `json:"manufacturer"`
	PartID       string   `json:"part_id"`
	Serial       string   `json:"serial"`
	AssetTag     string   `json:"asset_tag"`
	Discovered   bool     `json:"discovered"`
	Description  string   `json:"description"`
	Tags         []string `json:"tags"`
}

type InventoryItems struct {
	Count    int    `json:"count"`
	Next     string `json:"next"`
	Previous string `json:"previous"`
	Results  []struct {
		ID     int `json:"id"`
		Device struct {
			ID          int    `json:"id"`
			URL         string `json:"url"`
			Name        string `json:"name"`
			DisplayName string `json:"display_name"`
		} `json:"device"`
		Parent       int    `json:"parent"`
		Name         string `json:"name"`
		Manufacturer struct {
			ID              int    `json:"id"`
			URL             string `json:"url"`
			Name            string `json:"name"`
			Slug            string `json:"slug"`
			DevicetypeCount int    `json:"devicetype_count"`
		} `json:"manufacturer"`
		PartID      string   `json:"part_id"`
		Serial      string   `json:"serial"`
		AssetTag    string   `json:"asset_tag"`
		Discovered  bool     `json:"discovered"`
		Description string   `json:"description"`
		Tags        []string `json:"tags"`
	} `json:"results"`
}

type InventoryItemFilter struct {
	Device string `schema:"device"`
}

const inventoryItemsPath = "/dcim/inventory-items"

// List inventory-items. InventoryItemFilter is used to list based on filter queries.
func (s *InventoryItemsService) List(ctx context.Context, f *InventoryItemFilter) (*InventoryItems, error) {
	var inventoryitems InventoryItems
	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 &inventoryitems, err
	}
	query = form.Encode()

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

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

	return &inventoryitems, nil
}

// Create a inventory-item
func (s *InventoryItemsService) Create(ctx context.Context, c *NewInventoryItem) error {
	var err error
	var req *http.Request

	req, err = s.client.newRequest(ctx, "POST", inventoryItemsPath, "", 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
}