gosora/routes/poll.go

101 lines
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package routes
import (
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"bytes"
"database/sql"
"errors"
"net/http"
"strconv"
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c "git.tuxpa.in/a/gosora/common"
)
func PollVote(w http.ResponseWriter, r *http.Request, u *c.User, sPollID string) c.RouteError {
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pollID, err := strconv.Atoi(sPollID)
if err != nil {
return c.PreError("The provided PollID is not a valid number.", w, r)
}
poll, err := c.Polls.Get(pollID)
if err == sql.ErrNoRows {
return c.PreError("The poll you tried to vote for doesn't exist.", w, r)
} else if err != nil {
return c.InternalError(err, w, r)
}
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var topic *c.Topic
if poll.ParentTable == "replies" {
reply, err := c.Rstore.Get(poll.ParentID)
if err == sql.ErrNoRows {
return c.PreError("The parent post doesn't exist.", w, r)
} else if err != nil {
return c.InternalError(err, w, r)
}
topic, err = c.Topics.Get(reply.ParentID)
} else if poll.ParentTable == "topics" {
topic, err = c.Topics.Get(poll.ParentID)
} else {
return c.InternalError(errors.New("Unknown parentTable for poll"), w, r)
}
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if err == sql.ErrNoRows {
return c.PreError("The parent topic doesn't exist.", w, r)
} else if err != nil {
return c.InternalError(err, w, r)
}
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// TODO: Add hooks to make use of headerLite
_, ferr := c.SimpleForumUserCheck(w, r, u, topic.ParentID)
if ferr != nil {
return ferr
}
if !u.Perms.ViewTopic {
return c.NoPermissions(w, r, u)
}
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optIndex, err := strconv.Atoi(r.PostFormValue("poll_option_input"))
if err != nil {
return c.LocalError("Malformed input", w, r, u)
}
err = poll.CastVote(optIndex, u.ID, u.GetIP())
if err != nil {
return c.InternalError(err, w, r)
}
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http.Redirect(w, r, "/topic/"+strconv.Itoa(topic.ID), http.StatusSeeOther)
return nil
}
func PollResults(w http.ResponseWriter, r *http.Request, u *c.User, sPollID string) c.RouteError {
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//log.Print("in PollResults")
pollID, err := strconv.Atoi(sPollID)
if err != nil {
return c.PreError("The provided PollID is not a valid number.", w, r)
}
poll, err := c.Polls.Get(pollID)
if err == sql.ErrNoRows {
return c.PreError("The poll you tried to vote for doesn't exist.", w, r)
} else if err != nil {
return c.InternalError(err, w, r)
}
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// TODO: Implement a version of this which doesn't rely so much on sequential order
var ob bytes.Buffer
ob.WriteRune('[')
var i int
e := poll.Resultsf(func(votes int) error {
if i != 0 {
ob.WriteRune(',')
}
ob.WriteString(strconv.Itoa(votes))
i++
return nil
})
if e != nil && e != sql.ErrNoRows {
return c.InternalError(e, w, r)
}
ob.WriteRune(']')
w.Write(ob.Bytes())
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return nil
}