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package main
import (
"fmt"
"log"
"net/http"
"time"
"github.com/gorilla/handlers"
"github.com/gorilla/mux"
)
const getwtxt = "0.1"
func main() {
// StrictSlash(true) allows /api and /api/
// to serve the same content without duplicating
// handlers/paths
index := mux.NewRouter().StrictSlash(true)
api := index.PathPrefix("/api").Subrouter()
// <3 gorilla/mux
index.Path("/").
Methods("GET").
HandlerFunc(indexHandler)
index.Path("/css").
Methods("GET").
HandlerFunc(cssHandler)
index.Path("/api").
Methods("GET").
HandlerFunc(apiBaseHandler)
// twtxt will add support for other formats later.
// Maybe json? Making this future-proof.
api.Path("/{format:(?:plain)}").
Methods("GET").
HandlerFunc(apiFormatHandler)
// Specifying the endpoint with and without query information.
// Will return 404 on empty queries otherwise.
api.Path("/{format:(?:plain)}/{endpoint:(?:mentions|users|tweets)}").
Methods("GET").
HandlerFunc(apiEndpointHandler)
// Using stdlib net/url to validate the input URLs rather than regex.
// Validating a URL with regex is unwieldly
api.Path("/{format:(?:plain)}/{endpoint:(?:mentions|users|tweets)}").
Queries("url", "{url}", "q", "{query}").
Methods("GET").
HandlerFunc(apiEndpointHandler)
// This is for submitting new users
api.Path("/{format:(?:plain)}/{endpoint:users}").
Queries("url", "{url}", "nickname", "{nickname:[a-zA-Z0-9]+}").
Methods("POST").
HandlerFunc(apiEndpointPOSTHandler)
// Show all observed tags
api.Path("/{format:(?:plain)}/tags").
Methods("GET").
HandlerFunc(apiTagsBaseHandler)
// Requests tweets with a specific tag
api.Path("/{format:(?:plain)}/tags/{tags:[a-zA-Z0-9]+}").
Methods("GET").
HandlerFunc(apiTagsHandler)
// format the port for the http.Server object
portnum := fmt.Sprintf(":%v", confObj.port)
// defines options for the http server.
// handlers.CompressHandler gzips all responses.
// Write/Read timeouts are self explanatory.
server := &http.Server{
Handler: handlers.CompressHandler(index),
Addr: portnum,
WriteTimeout: 15 * time.Second,
ReadTimeout: 15 * time.Second,
}
log.Printf("Listening on port %v\n", confObj.port)
err := server.ListenAndServe()
if err != nil {
log.Printf("%v\n", err)
}
closelog <- true
}
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