package bits

import (
	"context"
	"encoding/json"
	"fmt"
	"net/http"
	"net/url"
	"time"
)

type GetCheermotesResponse struct {
	// The list of Cheermotes. The list is in ascending order by the order field’s value.
	Data []Cheermote `json:"data"`
}

type Cheermote struct {
	// The name portion of the Cheermote string that you use in chat to cheer Bits.
	// The full Cheermote string is the concatenation of {prefix} + {number of Bits}.
	// For example, if the prefix is “Cheer” and you want to cheer 100 Bits, the full Cheermote string is Cheer100.
	// When the Cheermote string is entered in chat, Twitch converts it to the image associated with the Bits tier that was cheered.
	Prefix string `json:"prefix"`

	// A list of tier levels that the Cheermote supports.
	// Each tier identifies the range of Bits that you can cheer at that tier level and an image that graphically identifies the tier level.
	Tiers []CheermoteTier `json:"tiers"`

	// The type of Cheermote.
	Type CheermoteType `json:"type"`

	// The order that the Cheermotes are shown in the Bits card. The numbers may not be consecutive. For example, the numbers may jump from 1 to 7 to 13.
	// The order numbers are unique within a Cheermote type (for example, global_first_party) but may not be unique amongst all Cheermotes in the response.
	Order int `json:"order"`

	// The date and time, in RFC3339 format, when this Cheermote was last updated.
	LastUpdated time.Time `json:"last_updated"`

	// A Boolean value that indicates whether this Cheermote provides a charitable contribution match during charity campaigns.
	IsCharitable bool `json:"is_charitable"`
}

type CheermoteTier struct {
	// The minimum number of Bits that you must cheer at this tier level.
	// The maximum number of Bits that you can cheer at this level is determined by the required minimum Bits of the next tier level minus 1.
	// For example, if min_bits is 1 and min_bits for the next tier is 100, the Bits range for this tier level is 1 through 99.
	// The minimum Bits value of the last tier is the maximum number of Bits you can cheer using this Cheermote. For example, 10000.
	MinBits int `json:"min_bits"`

	// The tier level. Possible tiers are:
	//
	// 1, 100, 500, 1000, 5000, 10000, 100000
	ID string `json:"id"`

	// The hex code of the color associated with this tier level (for example, #979797).
	Color string `json:"color"`

	// The animated and static image sets for the Cheermote. The dictionary of images is organized by theme, format, and size.
	// The theme keys are dark and light. Each theme is a dictionary of formats: animated and static.
	// Each format is a dictionary of sizes: 1, 1.5, 2, 3, and 4. The value of each size contains the URL to the image.
	Images map[string]CheermoteImage `json:"images"`

	// A Boolean value that determines whether users can cheer at this tier level.
	CanCheer bool `json:"can_cheer"`

	// A Boolean value that determines whether this tier level is shown in the Bits card. Is true if this tier level is shown in the Bits card.
	ShowInBitsCard bool `json:"show_in_bits_card"`
}

type CheermoteImage struct {
	Animated *CheermoteImageSizes `json:"animated"`
	Static   *CheermoteImageSizes `json:"static"`
}

type CheermoteImageSizes struct {
	One   CheermoteImage `json:"1"`
	One5  CheermoteImage `json:"1.5"`
	Two   CheermoteImage `json:"2"`
	Three CheermoteImage `json:"3"`
	Four  CheermoteImage `json:"4"`
}

// Gets a list of Cheermotes that users can use to cheer Bits in any Bits-enabled channel’s chat room. Cheermotes are animated emotes that viewers can assign Bits to.
//
// Requires an app access token or user access token.
func (b *Bits) GetCheermotes(ctx context.Context, broadcasterID string) (*GetCheermotesResponse, error) {
	endpoint := b.baseUrl.ResolveReference(&url.URL{Path: "bits/cheermotes", RawQuery: "broadcaster_id=" + broadcasterID})

	req, err := http.NewRequestWithContext(ctx, http.MethodGet, endpoint.String(), nil)
	if err != nil {
		return nil, err
	}

	res, err := b.client.Do(req)
	if err != nil {
		return nil, err
	}
	defer res.Body.Close()

	statusOK := res.StatusCode >= 200 && res.StatusCode < 300
	if !statusOK {
		return nil, fmt.Errorf("failed to get cheermotes (%d)", res.StatusCode)
	}

	var data GetCheermotesResponse
	if err := json.NewDecoder(res.Body).Decode(&data); err != nil {
		return nil, err
	}

	return &data, nil
}