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router.go
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router.go
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package slackbot
import (
"context"
)
type Router interface {
Match(context.Context, *RouteMatch) (bool, context.Context)
SetBotID(botID string)
Hear(regex string) *Route
Messages(types ...MessageType) *Route
AddMatcher(m Matcher) *Route
TalkToSelf() *Route
NoTalkToSelf() *Route
AlwaysTalkToSelf() Router
NeverTalkToSelf() Router
Handler(handler Handler) error
MessageHandler(handler MessageHandler) error
Err() error
}
type SimpleRouter struct {
// Routes to be matched, in order.
routes []*Route
// Slack UserID of the bot UserID
botUserID string
// Holds any error that occurred during the function chain that created this router. Used by subrouters.
err error
// if set, all new routes will be set to allow self-talking
talkToSelf bool
}
// Match matches registered routes against the request.
func (r *SimpleRouter) Match(ctx context.Context, match *RouteMatch) (bool, context.Context) {
if r.err != nil {
return false, ctx
}
for _, route := range r.routes {
if matched, ctx := route.Match(ctx, match); matched {
return true, ctx
}
}
return false, ctx
}
// NewRoute registers an empty route.
func (r *SimpleRouter) newRoute(selftalk bool) *Route {
route := &Route{
err: r.err,
talkToSelf: selftalk,
botUserID: r.botUserID,
}
r.routes = append(r.routes, route)
return route
}
func (r *SimpleRouter) Hear(regex string) *Route {
return r.newRoute(r.talkToSelf).Hear(regex)
}
func (r *SimpleRouter) Handler(handler Handler) error {
return r.newRoute(r.talkToSelf).Handler(handler)
}
func (r *SimpleRouter) MessageHandler(handler MessageHandler) error {
return r.newRoute(r.talkToSelf).MessageHandler(handler)
}
func (r *SimpleRouter) Messages(types ...MessageType) *Route {
return r.newRoute(r.talkToSelf).Messages(types...)
}
func (r *SimpleRouter) AddMatcher(m Matcher) *Route {
return r.newRoute(r.talkToSelf).AddMatcher(m)
}
func (r *SimpleRouter) SetBotID(botID string) {
r.botUserID = botID
for _, route := range r.routes {
route.setBotID(botID)
}
}
func (r *SimpleRouter) AlwaysTalkToSelf() Router {
r.talkToSelf = true
return r
}
func (r *SimpleRouter) NeverTalkToSelf() Router {
r.talkToSelf = false
return r
}
func (r *SimpleRouter) TalkToSelf() *Route {
return r.newRoute(true)
}
func (r *SimpleRouter) NoTalkToSelf() *Route {
return r.newRoute(false)
}
func (r *SimpleRouter) Err() error {
return r.err
}