channels

type Channel interface {
	// NewEventProcessContext builds a new copy of data to process for an event,
	// for example, NewEventProcessContext returns []chatID in Telegram channel，
	// if any error occurs and the processing is retried,
	// the channel can know which chatIDs have already been noticed successfully.
	NewEventProcessContext(e *event.Event) *EventProcessContext

	// Handle handles an event
	Handle(ctx *EventProcessContext) error
}

type ChannelCallback struct {
	Client      *http.Client
	Method      string
	URL         string
	UseTemplate bool
	TmplAdded   *template.Template
	TmplDeleted *template.Template
	TmplUpdated *template.Template
}

type ChannelCallbackConfig struct {
	Method          string
	URL             string
	Proxy           string
	UseTemplate     bool
	AddedTemplate   string
	DeletedTemplate string
	UpdatedTemplate string
}

type ChannelDingtalk struct {
	Client      *http.Client
	WebhookURL  string
	AtMobiles   []string
	AtAll       bool
	TmplAdded   *template.Template
	TmplDeleted *template.Template
	TmplUpdated *template.Template
}

type ChannelDingtalkConfig struct {
	WebhookURL      string
	Proxy           string
	AtMobiles       []string
	AtAll           bool
	AddedTemplate   string
	DeletedTemplate string
	UpdatedTemplate string
}

type ChannelFlock struct {
	Client      *http.Client
	URL         string
	TmplTitle   *template.Template
	TmplAdded   *template.Template
	TmplDeleted *template.Template
	TmplUpdated *template.Template
}

type ChannelFlockConfig struct {
	URL             string
	Proxy           string
	TitleTemplate   string
	AddedTemplate   string
	DeletedTemplate string
	UpdatedTemplate string
}

type ChannelMap map[ChannelName]Channel

type ChannelName string

type ChannelPrint struct {
	Writer      io.Writer
	IsStdout    bool
	UseTemplate bool
	TmplAdded   *template.Template
	TmplDeleted *template.Template
	TmplUpdated *template.Template
}

type ChannelPrintConfig struct {
	Writer          string
	UseTemplate     bool
	AddedTemplate   string
	DeletedTemplate string
	UpdatedTemplate string
}

type ChannelSlack struct {
	Client      *slack.Client // TODO: add Slack app support (not only webhooks)
	WebhookURL  string
	TmplTitle   *template.Template
	TmplAdded   *template.Template
	TmplDeleted *template.Template
	TmplUpdated *template.Template
}

type ChannelSlackConfig struct {
	Token           string
	Proxy           string
	WebhookURL      string
	TitleTemplate   string
	AddedTemplate   string
	DeletedTemplate string
	UpdatedTemplate string
}

type ChannelTelegram struct {
	Client      *http.Client
	Token       string
	ChatIDs     []string
	TmplAdded   *template.Template
	TmplDeleted *template.Template
	TmplUpdated *template.Template
}

type ChannelTelegramConfig struct {
	Token           string
	ChatIDs         []string
	Proxy           string
	AddedTemplate   string
	DeletedTemplate string
	UpdatedTemplate string
}

type ChannelType string

type DingtalkMessage struct {
	At      DingtalkMessageAt   `json:"at"`
	Text    DingtalkMessageText `json:"text"`
	Msgtype string              `json:"msgtype"`
}

type DingtalkMessageAt struct {
	AtMobiles []string `json:"atMobiles"`
	AtUserIds []string `json:"atUserIds"`
	IsAtAll   bool     `json:"isAtAll"`
}

type DingtalkMessageText struct {
	Content string `json:"content"`
}

type EventProcessContext struct {
	Event *event.Event

	// Data is the context data used by a channel during processing an event,
	// for example, Telegram channel stores []chatID in Data,
	// chatID are deleted from the slice once message send successfully,
	// if any error occurs and the processing is retried,
	// it can know which chatIDs have already been noticed successfully.
	Data interface{}
}

type FlockMessage struct {
	Notification string                   `json:"notification"`
	Text         string                   `json:"text"`
	Attachments  []FlockMessageAttachment `json:"attachments"`
}

type FlockMessageAttachment struct {
	Title string `json:"title"`
	Color string `json:"color"`
}

type TelegramMessage struct {
	ChatID string `json:"chat_id"`
	Text   string `json:"text"`
}