30 lines
878 B
Go
30 lines
878 B
Go
package telebot
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// MiddlewareFunc represents a middleware processing function,
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// which get called before the endpoint group or specific handler.
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type MiddlewareFunc func(HandlerFunc) HandlerFunc
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func applyMiddleware(h HandlerFunc, m ...MiddlewareFunc) HandlerFunc {
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for i := len(m) - 1; i >= 0; i-- {
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h = m[i](h)
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}
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return h
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}
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// Group is a separated group of handlers, united by the general middleware.
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type Group struct {
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b *Bot
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middleware []MiddlewareFunc
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}
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// Use adds middleware to the chain.
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func (g *Group) Use(middleware ...MiddlewareFunc) {
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g.middleware = append(g.middleware, middleware...)
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}
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// Handle adds endpoint handler to the bot, combining group's middleware
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// with the optional given middleware.
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func (g *Group) Handle(endpoint interface{}, h HandlerFunc, m ...MiddlewareFunc) {
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g.b.Handle(endpoint, h, append(g.middleware, m...)...)
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}
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