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package context
import (
"gopkg.in/macaron.v1"
"github.com/go-macaron/csrf"
"github.com/go-macaron/session"
"github.com/go-macaron/cache"
log "gopkg.in/clog.v1"
"net/http"
"dev.sigpipe.me/dashie/git.txt/setting"
"fmt"
"io"
"time"
"strings"
"github.com/go-macaron/i18n"
"html/template"
"dev.sigpipe.me/dashie/git.txt/models"
"dev.sigpipe.me/dashie/git.txt/stuff/form"
"dev.sigpipe.me/dashie/git.txt/stuff/auth"
)
// Context represents context of a request.
type Context struct {
*macaron.Context
Cache cache.Cache
csrf csrf.CSRF
Flash *session.Flash
Session session.Store
User *models.User
IsLogged bool
IsBasicAuth bool
}
// Title sets "Title" field in template data.
func (c *Context) Title(locale string) {
c.Data["Title"] = c.Tr(locale) + " - " + setting.AppName
}
// HTML responses template with given status.
func (ctx *Context) HTML(status int, name string) {
log.Trace("Template: %s", name)
ctx.Context.HTML(status, name)
}
// Success responses template with status http.StatusOK.
func (c *Context) Success(name string) {
c.HTML(http.StatusOK, name)
}
// JSONSuccess responses JSON with status http.StatusOK.
func (c *Context) JSONSuccess(data interface{}) {
c.JSON(http.StatusOK, data)
}
// HasError returns true if error occurs in form validation.
func (ctx *Context) HasError() bool {
hasErr, ok := ctx.Data["HasError"]
if !ok {
return false
}
ctx.Flash.ErrorMsg = ctx.Data["ErrorMsg"].(string)
ctx.Data["Flash"] = ctx.Flash
return hasErr.(bool)
}
// RenderWithErr used for page has form validation but need to prompt error to users.
func (ctx *Context) RenderWithErr(msg, tpl string, f interface{}) {
if f != nil {
form.Assign(f, ctx.Data)
}
ctx.Flash.ErrorMsg = msg
ctx.Data["Flash"] = ctx.Flash
ctx.HTML(http.StatusOK, tpl)
}
// Handle handles and logs error by given status.
func (ctx *Context) Handle(status int, title string, err error) {
switch status {
case http.StatusNotFound:
ctx.Data["Title"] = "Page Not Found"
case http.StatusInternalServerError:
ctx.Data["Title"] = "Internal Server Error"
log.Error(2, "%s: %v", title, err)
}
ctx.HTML(status, fmt.Sprintf("status/%d", status))
}
// NotFound renders the 404 page.
func (ctx *Context) NotFound() {
ctx.Handle(http.StatusNotFound, "", nil)
}
// ServerError renders the 500 page.
func (c *Context) ServerError(title string, err error) {
c.Handle(http.StatusInternalServerError, title, err)
}
// NotFoundOrServerError use error check function to determine if the error
// is about not found. It responses with 404 status code for not found error,
// or error context description for logging purpose of 500 server error.
func (c *Context) NotFoundOrServerError(title string, errck func(error) bool, err error) {
if errck(err) {
c.NotFound()
return
}
c.ServerError(title, err)
}
func (ctx *Context) ServeContent(name string, r io.ReadSeeker, params ...interface{}) {
modtime := time.Now()
for _, p := range params {
switch v := p.(type) {
case time.Time:
modtime = v
}
}
ctx.Resp.Header().Set("Content-Description", "File Transfer")
ctx.Resp.Header().Set("Content-Type", "application/octet-stream")
ctx.Resp.Header().Set("Content-Disposition", "attachment; filename="+name)
ctx.Resp.Header().Set("Content-Transfer-Encoding", "binary")
ctx.Resp.Header().Set("Expires", "0")
ctx.Resp.Header().Set("Cache-Control", "must-revalidate")
ctx.Resp.Header().Set("Pragma", "public")
http.ServeContent(ctx.Resp, ctx.Req.Request, name, modtime, r)
}
// Contexter initializes a classic context for a request.
func Contexter() macaron.Handler {
return func(c *macaron.Context, l i18n.Locale, cache cache.Cache, sess session.Store, f *session.Flash, x csrf.CSRF) {
ctx := &Context{
Context: c,
Cache: cache,
csrf: x,
Flash: f,
Session: sess,
}
if len(setting.HTTP.AccessControlAllowOrigin) > 0 {
ctx.Header().Set("Access-Control-Allow-Origin", setting.HTTP.AccessControlAllowOrigin)
ctx.Header().Set("'Access-Control-Allow-Credentials' ", "true")
ctx.Header().Set("Access-Control-Max-Age", "3600")
ctx.Header().Set("Access-Control-Allow-Headers", "Content-Type, Access-Control-Allow-Headers, Authorization, X-Requested-With")
}
// Compute current URL for real-time change language.
ctx.Data["Link"] = setting.AppSubURL + strings.TrimSuffix(ctx.Req.URL.Path, "/")
ctx.Data["PageStartTime"] = time.Now()
// Get user from session if logined.
ctx.User, ctx.IsBasicAuth = auth.SignedInUser(ctx.Context, ctx.Session)
if ctx.User != nil {
ctx.IsLogged = true
ctx.Data["IsLogged"] = ctx.IsLogged
ctx.Data["LoggedUser"] = ctx.User
ctx.Data["LoggedUserID"] = ctx.User.ID
ctx.Data["LoggedUserName"] = ctx.User.UserName
} else {
ctx.Data["LoggedUserID"] = 0
ctx.Data["LoggedUserName"] = ""
}
ctx.Data["CSRFToken"] = x.GetToken()
ctx.Data["CSRFTokenHTML"] = template.HTML(`<input type="hidden" name="_csrf" value="` + x.GetToken() + `">`)
log.Trace("Session ID: %s", sess.ID())
log.Trace("CSRF Token: %v", ctx.Data["CSRFToken"])
c.Map(ctx)
}
}