website/pkg/controller/photo/site_gallery.go

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package photo
import (
"net/http"
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"code.nonshy.com/nonshy/website/pkg/config"
"code.nonshy.com/nonshy/website/pkg/models"
"code.nonshy.com/nonshy/website/pkg/session"
"code.nonshy.com/nonshy/website/pkg/templates"
)
// SiteGallery controller (/photo/gallery) to view all members' public gallery pics.
func SiteGallery() http.HandlerFunc {
tmpl := templates.Must("photo/gallery.html")
// Whitelist for ordering options.
var sortWhitelist = []string{
"created_at desc",
"created_at asc",
}
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
// Query params.
var (
viewStyle = r.FormValue("view") // cards (default), full
// Search filters.
filterExplicit = r.FormValue("explicit")
filterVisibility = r.FormValue("visibility")
sort = r.FormValue("sort")
sortOK bool
)
// Sort options.
for _, v := range sortWhitelist {
if sort == v {
sortOK = true
break
}
}
if !sortOK {
sort = "created_at desc"
}
// Defaults.
if viewStyle != "full" {
viewStyle = "cards"
}
// Load the current user.
currentUser, err := session.CurrentUser(r)
if err != nil {
session.FlashError(w, r, "Unexpected error: couldn't get CurrentUser")
}
// Get the page of photos.
pager := &models.Pagination{
Page: 1,
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PerPage: config.PageSizeSiteGallery,
Sort: sort,
}
pager.ParsePage(r)
photos, err := models.PaginateGalleryPhotos(currentUser, filterExplicit, filterVisibility, pager)
// Bulk load the users associated with these photos.
var userIDs = []uint64{}
for _, photo := range photos {
userIDs = append(userIDs, photo.UserID)
}
userMap, err := models.MapUsers(userIDs)
if err != nil {
session.FlashError(w, r, "Failed to MapUsers: %s", err)
}
// Get Likes information about these photos.
var photoIDs = []uint64{}
for _, p := range photos {
photoIDs = append(photoIDs, p.ID)
}
likeMap := models.MapLikes(currentUser, "photos", photoIDs)
commentMap := models.MapCommentCounts("photos", photoIDs)
var vars = map[string]interface{}{
"IsSiteGallery": true,
"Photos": photos,
"UserMap": userMap,
"LikeMap": likeMap,
"CommentMap": commentMap,
"Pager": pager,
"ViewStyle": viewStyle,
// Search filters
"Sort": sort,
"FilterExplicit": filterExplicit,
"FilterVisibility": filterVisibility,
}
if err := tmpl.Execute(w, r, vars); err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
})
}