110 lines
3.3 KiB
Go
110 lines
3.3 KiB
Go
package store
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import (
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"html/template"
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"regexp"
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"time"
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"github.com/microcosm-cc/bluemonday"
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)
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// Comment represents a single comment with optional reference to its parent
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type Comment struct {
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ID string `json:"id" bson:"_id"`
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ParentID string `json:"pid"`
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Text string `json:"text"`
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Orig string `json:"orig,omitempty"`
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User User `json:"user"`
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Locator Locator `json:"locator"`
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Score int `json:"score"`
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Votes map[string]bool `json:"votes,omitempty"`
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Vote int `json:"vote"` // vote for the current user
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Controversy float64 `json:"controversy,omitempty"`
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Timestamp time.Time `json:"time" bson:"time"`
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Edit *Edit `json:"edit,omitempty" bson:"edit,omitempty"` // pointer to have empty default in json response
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Pin bool `json:"pin,omitempty" bson:"pin,omitempty"`
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Deleted bool `json:"delete,omitempty" bson:"delete"`
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PostTitle string `json:"title,omitempty" bson:"title"`
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}
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// Locator keeps site and url of the post
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type Locator struct {
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SiteID string `json:"site,omitempty" bson:"site"`
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URL string `json:"url"`
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}
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// Edit indication
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type Edit struct {
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Timestamp time.Time `json:"time" bson:"time"`
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Summary string `json:"summary"`
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}
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// PostInfo holds summary for given post url
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type PostInfo struct {
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URL string `json:"url"`
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Count int `json:"count"`
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ReadOnly bool `json:"read_only,omitempty" bson:"read_only,omitempty"`
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FirstTS time.Time `json:"first_time,omitempty" bson:"first_time,omitempty"`
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LastTS time.Time `json:"last_time,omitempty" bson:"last_time,omitempty"`
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}
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// BlockedUser holds id and ts for blocked user
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type BlockedUser struct {
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ID string `json:"id"`
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Name string `json:"name"`
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Until time.Time `json:"time"`
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}
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// DeleteMode defines how much comment info will be erased
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type DeleteMode int
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// DeleteMode enum
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const (
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SoftDelete DeleteMode = 0
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HardDelete DeleteMode = 1
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)
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// Maximum length for URL text shortening.
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const shortURLLen = 48
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// PrepareUntrusted pre-processes a comment received from untrusted source by clearing all
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// autogen fields and reset everything users not supposed to provide
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func (c *Comment) PrepareUntrusted() {
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c.ID = "" // don't allow user to define ID, force auto-gen
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c.Timestamp = time.Time{} // reset time, force auto-gen
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c.Votes = make(map[string]bool)
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c.Score = 0
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c.Edit = nil
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c.Pin = false
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c.Deleted = false
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}
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// SetDeleted clears comment info, reset to deleted state. hard flag will clear all user info as well
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func (c *Comment) SetDeleted(mode DeleteMode) {
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c.Text = ""
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c.Orig = ""
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c.Score = 0
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c.Votes = map[string]bool{}
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c.Edit = nil
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c.Deleted = true
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c.Pin = false
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if mode == HardDelete {
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c.User.Name = "deleted"
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c.User.ID = "deleted"
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c.User.Picture = ""
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c.User.IP = ""
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}
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}
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// Sanitize clean dangerous html/js from the comment
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func (c *Comment) Sanitize() {
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p := bluemonday.UGCPolicy()
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p.AllowAttrs("class").Matching(regexp.MustCompile("^language-[a-zA-Z0-9]+$")).OnElements("code")
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c.Text = p.Sanitize(c.Text)
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c.Orig = p.Sanitize(c.Orig)
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c.User.ID = template.HTMLEscapeString(c.User.ID)
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c.User.Name = template.HTMLEscapeString(c.User.Name)
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c.User.Picture = p.Sanitize(c.User.Picture)
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}
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