// HandleShow displays a single story
func HandleShow(context router.Context) error {
// Find the story
story, err := stories.Find(context.ParamInt("id"))
if err != nil {
return router.InternalError(err)
}
// Redirect requests to the canonical url
if context.Path() != story.URLShow() {
return router.Redirect(context, story.URLShow())
}
// Find the comments for this story
// Fetch the comments
q := comments.Where("story_id=?", story.Id).Order(comments.RankOrder)
rootComments, err := comments.FindAll(q)
if err != nil {
return router.InternalError(err)
}
// Render the template
view := view.New(context)
view.AddKey("story", story)
view.AddKey("meta_title", story.Name)
view.AddKey("meta_desc", story.Summary)
view.AddKey("meta_keywords", story.Name)
view.AddKey("comments", rootComments)
return view.Render()
}
// HandleDownvote handles POST to /stories/123/downvote
func HandleDownvote(context router.Context) error {
// Prevent CSRF
err := authorise.AuthenticityToken(context)
if err != nil {
return router.NotAuthorizedError(err, "Vote Failed", "CSRF failure")
}
// Find the story
story, err := stories.Find(context.ParamInt("id"))
if err != nil {
return router.NotFoundError(err)
}
user := authorise.CurrentUser(context)
ip := getUserIP(context)
if !user.Admin() {
// Check we have no votes already from this user, if we do fail
if storyHasUserVote(story, user) {
return router.NotAuthorizedError(err, "Vote Failed", "Sorry you are not allowed to vote twice, nice try!")
}
}
// Authorise upvote on story for this user - our rules are:
if !user.CanDownvote() {
return router.NotAuthorizedError(err, "Vote Failed", "Sorry, you can't downvote yet")
}
err = authorise.Resource(context, story)
if err != nil {
return router.NotAuthorizedError(err, "Vote Failed", "Sorry you are not allowed to vote")
}
err = adjustUserPoints(user, -1)
if err != nil {
return err
}
// Adjust points on story and add to the vote table
err = addStoryVote(story, user, ip, -1)
if err != nil {
return err
}
return updateStoriesRank()
}
// HandleFlag handles POST to /stories/123/flag
func HandleFlag(context router.Context) error {
// Protect against CSRF
err := authorise.AuthenticityToken(context)
if err != nil {
return router.NotAuthorizedError(err, "Flag Failed", "CSRF failure")
}
// Find the story
story, err := stories.Find(context.ParamInt("id"))
if err != nil {
return router.NotFoundError(err)
}
user := authorise.CurrentUser(context)
ip := getUserIP(context)
// Check we have no votes already from this user, if we do fail
if storyHasUserFlag(story, user) {
return router.NotAuthorizedError(err, "Flag Failed", "Sorry you are not allowed to flag twice, nice try!")
}
// Authorise upvote on story for this user
if !user.CanFlag() {
return router.NotAuthorizedError(err, "Flag Failed", "Sorry, you can't flag yet")
}
err = authorise.Resource(context, story)
if err != nil {
return router.NotAuthorizedError(err, "Flag Failed", "Sorry you are not allowed to flag")
}
err = adjustUserPoints(user, -1)
if err != nil {
return err
}
err = addStoryVote(story, user, ip, -5)
if err != nil {
return err
}
return updateStoriesRank()
}
// HandleUpdateShow renders the form to update a story
func HandleUpdateShow(context router.Context) error {
// Find the story
story, err := stories.Find(context.ParamInt("id"))
if err != nil {
return router.NotFoundError(err)
}
// Authorise update story
err = authorise.Resource(context, story)
if err != nil {
return router.NotAuthorizedError(err)
}
// Render the template
view := view.New(context)
view.AddKey("story", story)
return view.Render()
}
// HandleDestroy handles a DESTROY request for stories
func HandleDestroy(context router.Context) error {
// Find the story
story, err := stories.Find(context.ParamInt("id"))
if err != nil {
return router.NotFoundError(err)
}
// Authorise destroy story
err = authorise.Resource(context, story)
if err != nil {
return router.NotAuthorizedError(err)
}
// Destroy the story
story.Destroy()
// Redirect to stories root
return router.Redirect(context, story.URLIndex())
}
// HandleUpdate handles the POST of the form to update a story
func HandleUpdate(context router.Context) error {
// Find the story
story, err := stories.Find(context.ParamInt("id"))
if err != nil {
return router.NotFoundError(err)
}
// Authorise update story
err = authorise.ResourceAndAuthenticity(context, story)
if err != nil {
return router.NotAuthorizedError(err)
}
// Update the story from params
params, err := context.Params()
if err != nil {
return router.InternalError(err)
}
// Clean params according to role
accepted := stories.AllowedParams()
if authorise.CurrentUser(context).Admin() {
accepted = stories.AllowedParamsAdmin()
}
cleanedParams := params.Clean(accepted)
err = story.Update(cleanedParams)
if err != nil {
return err // Create returns a router.Error
}
err = updateStoriesRank()
if err != nil {
return router.InternalError(err)
}
// Redirect to story
return router.Redirect(context, story.URLShow())
}
// HandleCreate handles the POST of the create form for comments
func HandleCreate(context router.Context) error {
// Authorise csrf token
err := authorise.AuthenticityToken(context)
if err != nil {
return router.NotAuthorizedError(err)
}
// Check permissions - if not logged in and above 0 points, redirect
if !authorise.CurrentUser(context).CanComment() {
return router.NotAuthorizedError(nil, "Sorry", "You need to be registered and have more than 0 points to comment.")
}
// Setup context
params, err := context.Params()
if err != nil {
return router.InternalError(err)
}
// Find parent story - this must exist
story, err := stories.Find(params.GetInt("story_id"))
if err != nil {
return router.NotFoundError(err)
}
params.SetInt("story_id", story.Id)
params.Set("story_name", story.Name)
// Set a few params
user := authorise.CurrentUser(context)
params.SetInt("user_id", user.Id)
params.Set("user_name", user.Name)
params.SetInt("points", 1)
// Find the parent and set dotted id
// these are of the form xx.xx. with a trailing dot
// this saves us from saving twice on create
parentID := context.ParamInt("parent_id")
if parentID > 0 {
parent, err := comments.Find(parentID)
if err != nil {
return router.NotFoundError(err)
}
context.Logf("PARENT:%d - %s", parent.Id, parent.DottedIds)
params.Set("dotted_ids", fmt.Sprintf(parent.DottedIds+"."))
}
// Clean params allowing all through (since we have manually reset them above)
accepted := comments.AllowedParamsAdmin()
cleanedParams := params.Clean(accepted)
id, err := comments.Create(cleanedParams)
if err != nil {
return router.InternalError(err)
}
// Log creation
context.Logf("#info Created comment id,%d", id)
// Update the story comment count
storyParams := map[string]string{"comment_count": fmt.Sprintf("%d", story.CommentCount+1)}
err = story.Update(storyParams)
if err != nil {
return router.InternalError(err, "Error", "Could not update story.")
}
// Redirect to the new comment
m, err := comments.Find(id)
if err != nil {
return router.InternalError(err)
}
// Re-rank comments on this story
err = updateCommentsRank(m.StoryId)
if err != nil {
return err
}
return router.Redirect(context, m.URLStory())
}
// HandleCreate handles the POST of the create form for stories
func HandleCreate(context router.Context) error {
// Check csrf token
err := authorise.AuthenticityToken(context)
if err != nil {
return router.NotAuthorizedError(err)
}
// Check permissions - if not logged in and above 1 points, redirect to error
if !authorise.CurrentUser(context).CanSubmit() {
return router.NotAuthorizedError(nil, "Sorry", "You need to be registered and have more than 1 points to submit stories.")
}
// Get params
params, err := context.Params()
if err != nil {
return router.InternalError(err)
}
// Get user details
user := authorise.CurrentUser(context)
ip := getUserIP(context)
// Process urls
url := params.Get("url")
// Strip trailing slashes on url before comparisons
if strings.HasSuffix(url, "/") {
url = strings.Trim(url, "/")
}
// Strip ?utm_source etc - remove all after ?utm_source
if strings.Contains(url, "?utm_") {
url = strings.Split(url, "?utm_")[0]
}
// Strip url fragments (For example trailing # on medium urls)
if strings.Contains(url, "#") {
url = strings.Split(url, "#")[0]
}
// Rewrite mobile youtube links
if strings.HasPrefix(url, "https://m.youtube.com") {
url = strings.Replace(url, "https://m.youtube.com", "https://www.youtube.com", 1)
}
params.Set("url", url)
// Check that no story with this url already exists
q := stories.Where("url=?", url)
duplicates, err := stories.FindAll(q)
if err != nil {
return router.InternalError(err)
}
if len(duplicates) > 0 {
story := duplicates[0]
// Check we have no votes already from this user, if we do fail
if storyHasUserVote(story, user) {
return router.NotAuthorizedError(err, "Vote Failed", "Sorry you are not allowed to vote twice, nice try!")
}
// Add a point to dupe and return
addStoryVote(story, user, ip, 1)
return router.Redirect(context, story.URLShow())
}
// Clean params according to role
accepted := stories.AllowedParams()
if authorise.CurrentUser(context).Admin() {
accepted = stories.AllowedParamsAdmin()
}
cleanedParams := params.Clean(accepted)
// Set a few params
cleanedParams["points"] = "1"
cleanedParams["user_id"] = fmt.Sprintf("%d", user.Id)
cleanedParams["user_name"] = user.Name
id, err := stories.Create(cleanedParams)
if err != nil {
return err // Create returns a router.Error
}
// Log creation
context.Logf("#info Created story id,%d", id)
// Redirect to the new story
story, err := stories.Find(id)
if err != nil {
return router.InternalError(err)
}
// We need to add a vote to the story here too by adding a join to the new id
err = recordStoryVote(story, user, ip, +1)
if err != nil {
return err
}
// Re-rank stories
err = updateStoriesRank()
if err != nil {
return err
}
return router.Redirect(context, story.URLIndex())
}