92 lines
2.3 KiB
Go
92 lines
2.3 KiB
Go
package poll
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import (
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"fmt"
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"net/http"
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"strconv"
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"code.nonshy.com/nonshy/website/pkg/models"
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"code.nonshy.com/nonshy/website/pkg/session"
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"code.nonshy.com/nonshy/website/pkg/templates"
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)
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// Vote controller for polls.
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func Vote() http.HandlerFunc {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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var (
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// Form parameters
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pollID uint64
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fromThreadID uint64
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answers = r.Form["answer"] // a slice in case of MultipleChoice
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nextURL string
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)
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// Parse integer params.
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if value, err := strconv.Atoi(r.FormValue("poll_id")); err != nil {
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session.FlashError(w, r, "Invalid poll ID")
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templates.Redirect(w, "/")
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return
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} else {
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pollID = uint64(value)
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}
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// Currently polls only exist in forum threads, require the thread ID.
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if value, err := strconv.Atoi(r.FormValue("from_thread_id")); err != nil {
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session.FlashError(w, r, "Invalid thread ID")
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templates.Redirect(w, "/")
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return
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} else {
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fromThreadID = uint64(value)
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nextURL = fmt.Sprintf("/forum/thread/%d", fromThreadID)
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}
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// POST request only.
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if r.Method != http.MethodPost {
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session.FlashError(w, r, "POST requests only.")
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templates.Redirect(w, nextURL)
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return
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}
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// An answer is required.
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if len(answers) == 0 || len(answers) == 1 && answers[0] == "" {
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session.FlashError(w, r, "An answer to this poll is required for voting.")
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templates.Redirect(w, nextURL)
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return
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}
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// Get the current user.
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user, err := session.CurrentUser(r)
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if err != nil {
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session.FlashError(w, r, "Unexpected error: couldn't get CurrentUser")
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templates.Redirect(w, nextURL)
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return
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}
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// Look up the poll.
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poll, err := models.GetPoll(pollID)
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if err != nil {
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session.FlashError(w, r, "Poll not found.")
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templates.Redirect(w, nextURL)
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return
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}
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// Is it accepting responses?
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result := poll.Result(user)
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if !result.AcceptingVotes {
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session.FlashError(w, r, "This poll is not accepting your vote at this time.")
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templates.Redirect(w, nextURL)
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return
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}
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// Cast the vote!
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if err := poll.CastVote(user, answers); err != nil {
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session.FlashError(w, r, "Couldn't cast the vote: %s", err)
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templates.Redirect(w, nextURL)
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return
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}
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session.Flash(w, r, "Your vote has been recorded!")
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templates.Redirect(w, nextURL)
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})
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}
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