package grafana

import (
	"context"
	"encoding/json"
	"fmt"
	"net/url"
	"strconv"
)

const (
	SearchTypeFolder    SearchParamType = "dash-folder"
	SearchTypeDashboard SearchParamType = "dash-db"
)

type FoundBoard struct {
	ID          uint     `json:"id"`
	UID         string   `json:"uid"`
	Title       string   `json:"title"`
	URI         string   `json:"uri"`
	URL         string   `json:"url"`
	Slug        string   `json:"slug"`
	Type        string   `json:"type"`
	Tags        []string `json:"tags"`
	IsStarred   bool     `json:"isStarred"`
	FolderID    int      `json:"folderId"`
	FolderUID   string   `json:"folderUid"`
	FolderTitle string   `json:"folderTitle"`
	FolderURL   string   `json:"folderUrl"`
}

type (
	// SearchParam is a type for specifying Search params.
	SearchParam func(*url.Values)
	// SearchParamType is a type accepted by SearchType func.
	SearchParamType string
	// QueryParam is a type for specifying arbitrary API parameters
	QueryParam func(*url.Values)
)

func (c *Client) Search(ctx context.Context, params ...SearchParam) ([]FoundBoard, error) {
	var (
		raw    []byte
		boards []FoundBoard
		code   int
		err    error
	)
	u := url.URL{}
	q := u.Query()
	for _, p := range params {
		p(&q)
	}
	if raw, code, err = c.get(ctx, "api/search", q); err != nil {
		return nil, err
	}
	if code != 200 {
		return nil, fmt.Errorf("HTTP error %d: returns %s", code, raw)
	}
	err = json.Unmarshal(raw, &boards)
	return boards, err
}

func SearchQuery(query string) SearchParam {
	return func(v *url.Values) {
		if query != "" {
			v.Set("query", query)
		}
	}
}

func SearchStarred(starred bool) SearchParam {
	return func(v *url.Values) {
		v.Set("starred", strconv.FormatBool(starred))
	}
}

func SearchTag(tag string) SearchParam {
	return func(v *url.Values) {
		if tag != "" {
			v.Add("tag", tag)
		}
	}
}

func SearchType(searchType SearchParamType) SearchParam {
	return func(v *url.Values) {
		v.Set("type", string(searchType))
	}
}