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package service
import (
"context"
"fmt"
"net/http"
"path"
"github.com/gorilla/mux"
)
var (
ctx = context.Background()
cookieAge = "31536000"
)
func getContextWithSession(ctx context.Context, req *http.Request) context.Context {
sessionID, err := req.Cookie("session_id")
if err != nil {
return ctx
}
return context.WithValue(ctx, "session_id", sessionID.Value)
}
func NewHandler(s Service, staticDir string) http.Handler {
r := mux.NewRouter()
r.PathPrefix("/static").Handler(http.StripPrefix("/static",
http.FileServer(http.Dir(path.Join(".", staticDir)))))
r.HandleFunc("/", func(w http.ResponseWriter, req *http.Request) {
location := "/signin"
sessionID, _ := req.Cookie("session_id")
if sessionID != nil && len(sessionID.Value) > 0 {
location = "/timeline"
}
w.Header().Add("Location", location)
w.WriteHeader(http.StatusSeeOther)
}).Methods(http.MethodGet)
r.HandleFunc("/signin", func(w http.ResponseWriter, req *http.Request) {
err := s.ServeSigninPage(ctx, w)
if err != nil {
s.ServeErrorPage(ctx, w, err)
return
}
}).Methods(http.MethodGet)
r.HandleFunc("/signin", func(w http.ResponseWriter, req *http.Request) {
instance := req.FormValue("instance")
url, sessionId, err := s.GetAuthUrl(ctx, instance)
if err != nil {
s.ServeErrorPage(ctx, w, err)
return
}
w.Header().Add("Set-Cookie", fmt.Sprintf("session_id=%s;max-age=%s", sessionId, cookieAge))
w.Header().Add("Location", url)
w.WriteHeader(http.StatusSeeOther)
}).Methods(http.MethodPost)
r.HandleFunc("/oauth_callback", func(w http.ResponseWriter, req *http.Request) {
ctx := getContextWithSession(context.Background(), req)
token := req.URL.Query().Get("code")
_, err := s.GetUserToken(ctx, "", nil, token)
if err != nil {
s.ServeErrorPage(ctx, w, err)
return
}
w.Header().Add("Location", "/timeline")
w.WriteHeader(http.StatusSeeOther)
}).Methods(http.MethodGet)
r.HandleFunc("/timeline", func(w http.ResponseWriter, req *http.Request) {
ctx := getContextWithSession(context.Background(), req)
maxID := req.URL.Query().Get("max_id")
sinceID := req.URL.Query().Get("since_id")
minID := req.URL.Query().Get("min_id")
err := s.ServeTimelinePage(ctx, w, nil, maxID, sinceID, minID)
if err != nil {
s.ServeErrorPage(ctx, w, err)
return
}
}).Methods(http.MethodGet)
r.HandleFunc("/thread/{id}", func(w http.ResponseWriter, req *http.Request) {
ctx := getContextWithSession(context.Background(), req)
id, _ := mux.Vars(req)["id"]
reply := req.URL.Query().Get("reply")
err := s.ServeThreadPage(ctx, w, nil, id, len(reply) > 1)
if err != nil {
s.ServeErrorPage(ctx, w, err)
return
}
}).Methods(http.MethodGet)
r.HandleFunc("/like/{id}", func(w http.ResponseWriter, req *http.Request) {
ctx := getContextWithSession(context.Background(), req)
id, _ := mux.Vars(req)["id"]
err := s.Like(ctx, w, nil, id)
if err != nil {
s.ServeErrorPage(ctx, w, err)
return
}
w.Header().Add("Location", req.Header.Get("Referer")+"#status-"+id)
w.WriteHeader(http.StatusSeeOther)
}).Methods(http.MethodGet)
r.HandleFunc("/unlike/{id}", func(w http.ResponseWriter, req *http.Request) {
ctx := getContextWithSession(context.Background(), req)
id, _ := mux.Vars(req)["id"]
err := s.UnLike(ctx, w, nil, id)
if err != nil {
s.ServeErrorPage(ctx, w, err)
return
}
w.Header().Add("Location", req.Header.Get("Referer")+"#status-"+id)
w.WriteHeader(http.StatusSeeOther)
}).Methods(http.MethodGet)
r.HandleFunc("/retweet/{id}", func(w http.ResponseWriter, req *http.Request) {
ctx := getContextWithSession(context.Background(), req)
id, _ := mux.Vars(req)["id"]
err := s.Retweet(ctx, w, nil, id)
if err != nil {
s.ServeErrorPage(ctx, w, err)
return
}
w.Header().Add("Location", req.Header.Get("Referer")+"#status-"+id)
w.WriteHeader(http.StatusSeeOther)
}).Methods(http.MethodGet)
r.HandleFunc("/unretweet/{id}", func(w http.ResponseWriter, req *http.Request) {
ctx := getContextWithSession(context.Background(), req)
id, _ := mux.Vars(req)["id"]
err := s.UnRetweet(ctx, w, nil, id)
if err != nil {
s.ServeErrorPage(ctx, w, err)
return
}
w.Header().Add("Location", req.Header.Get("Referer")+"#status-"+id)
w.WriteHeader(http.StatusSeeOther)
}).Methods(http.MethodGet)
r.HandleFunc("/post", func(w http.ResponseWriter, req *http.Request) {
ctx := getContextWithSession(context.Background(), req)
content := req.FormValue("content")
replyToID := req.FormValue("reply_to_id")
id, err := s.PostTweet(ctx, w, nil, content, replyToID)
if err != nil {
s.ServeErrorPage(ctx, w, err)
return
}
location := "/timeline" + "#status-" + id
if len(replyToID) > 0 {
location = "/thread/" + replyToID + "#status-" + id
}
w.Header().Add("Location", location)
w.WriteHeader(http.StatusSeeOther)
}).Methods(http.MethodPost)
r.HandleFunc("/signout", func(w http.ResponseWriter, req *http.Request) {
// TODO remove session from database
w.Header().Add("Set-Cookie", fmt.Sprintf("session_id=;max-age=0"))
w.Header().Add("Location", "/")
w.WriteHeader(http.StatusSeeOther)
}).Methods(http.MethodGet)
return r
}
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