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334 lines
8.2 KiB
334 lines
8.2 KiB
package model
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import (
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"database/sql"
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"errors"
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"fmt"
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"net/url"
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"time"
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"git.aiterp.net/AiteRP/aitestory/formparser"
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"git.aiterp.net/AiteRP/aitestory/server"
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"git.aiterp.net/gisle/wrouter/generate"
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"github.com/microcosm-cc/bluemonday"
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"github.com/russross/blackfriday"
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)
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// PageTypes describes how the source is rendered. For now it's only markdown,
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// but who knows what the future holds.
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var PageTypes = []string{
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"Markdown",
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}
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// PageMinDate is the earliest date possible. Stories from Matriarch Eriana's childhood
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// are thus not going to happen.
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var PageMinDate, _ = time.Parse(time.RFC3339, "1753-01-01T00:00:00Z")
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// Page is the model describing the individual articles posted
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// by users.
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type Page struct {
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ID string `json:"id"`
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Name string `json:"name"`
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Author string `json:"author"`
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Category string `json:"category"`
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FictionalDate time.Time `json:"fictionalDate"`
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PublishDate time.Time `json:"publishDate"`
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EditDate time.Time `json:"editDate"`
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Dated bool `json:"dated"`
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Published bool `json:"published"`
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Unlisted bool `json:"unlisted"`
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Specific bool `json:"specific"`
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Indexed bool `json:"indexed"`
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BackgroundURL string `json:"backgroundUrl"`
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Type string `json:"type"`
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Source string `json:"source"`
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Tags []Tag `json:"tags"`
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prevTags []Tag
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cachedOutput string
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}
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// Defaults fills in the default details for a page, suited for populating a form
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func (page *Page) Defaults() {
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page.Category = PageCategories[0].Key
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page.Dated = true
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page.Published = true
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page.Unlisted = false
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page.Specific = false
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page.Indexed = true
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page.BackgroundURL = ""
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page.Type = PageTypes[0]
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page.Source = ""
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}
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// Insert adds the page to the database
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func (page *Page) Insert() error {
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const insertPage = `
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INSERT INTO page (
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id, name, author, category, fictional_date,
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publish_date, edit_date, dated, published,
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unlisted, page.specific, indexed, type, source
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) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?);
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`
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const insertTag = `INSERT INTO page_tag (page_id,tag_id,page_tag.primary) VALUES (?, ?, ?)`
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db := server.Main.DB
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if page.ID == "" {
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page.generateID()
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}
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// Do the thing
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_, err := db.Exec(insertPage,
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page.ID, page.Name, page.Author, page.Category, page.FictionalDate, page.PublishDate,
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page.EditDate, page.Dated, page.Published, page.Unlisted, page.Specific, page.Indexed,
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page.Type, page.Source,
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)
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if err != nil {
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return err
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}
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// Insert tags
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for i, tag := range page.Tags {
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_, err := db.Exec(insertTag, page.ID, tag.ID, i == 0)
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if err != nil {
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page.Delete()
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return err
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}
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}
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return nil
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}
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// Update saves the page to the database
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func (page *Page) Update() error {
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const updatePage = `
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UPDATE page SET
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name=?,category=?,fictional_date=?,publish_date=?,
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edit_date=?,dated=?,published=?,unlisted=?,page.specific=?,
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indexed=?,type=?,source=?
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WHERE id=?
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`
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const clearTags = `DELETE FROM page_tag WHERE page_id=?`
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const insertTag = `INSERT INTO page_tag (page_id,tag_id,page_tag.primary) VALUES (?, ?, ?)`
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db := server.Main.DB
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if page.ID == "" {
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return errors.New("no id")
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}
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// Do the thing
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_, err := db.Exec(updatePage,
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page.Name, page.Category, page.FictionalDate, page.PublishDate,
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page.EditDate, page.Dated, page.Published, page.Unlisted, page.Specific, page.Indexed,
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page.Type, page.Source, page.ID,
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)
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if err != nil {
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return err
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}
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// Stop now if the tages haven't changed
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if len(page.prevTags) == len(page.Tags) {
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change := false
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for i, tag := range page.prevTags {
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if tag.ID != page.prevTags[i].ID {
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change = true
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break
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}
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}
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if !change {
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return nil
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}
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}
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// Re-tag (can be optimized if need arise)
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_, err = db.Exec(clearTags, page.ID)
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if err != nil {
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return err
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}
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for i, tag := range page.Tags {
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_, err := db.Exec(insertTag, page.ID, tag.ID, i == 0)
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if err != nil {
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return err
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}
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}
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return nil
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}
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// Delete removes the page from the database
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func (page *Page) Delete() error {
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db := server.Main.DB
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// Do the thing
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results, err := db.Exec("DELETE FROM `page` WHERE id=? LIMIT 1", page.ID)
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if err != nil {
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return err
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}
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// Count the stuffs that were done things to
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affected, err := results.RowsAffected()
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if err != nil {
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return err
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}
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if affected == 0 {
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return errors.New("page not found")
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}
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return nil
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}
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// Content parses the content of the page
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func (page *Page) Content() (string, error) {
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if page.cachedOutput != "" {
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return page.cachedOutput, nil
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}
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if page.Type == "Markdown" {
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// TODO: Convert [[Ehanis Tioran]] to [Ehanis Tioran](https://wiki.aiterp.net/index.php?title=Ehanis%20Tioran)
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unsafe := blackfriday.MarkdownCommon([]byte(page.Source))
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page.cachedOutput = string(bluemonday.UGCPolicy().SanitizeBytes(unsafe))
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return page.cachedOutput, nil
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}
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return "", fmt.Errorf("Page type '%s' is not supported", page.Type)
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}
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// ParseForm validates the values in a form and sets the page's values whenever possible regardless
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// so that it can be pushed to the viewmodel to allow the user to correct their mistakes without fear
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// of losing their hard work
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func (page *Page) ParseForm(form url.Values) []error {
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errors := make([]error, 0, 4)
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page.cachedOutput = ""
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err := formparser.Select(form.Get("category"), &page.Category, pageCategories, page.Category != "")
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if err != nil {
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errors = append(errors, fmt.Errorf("Category: %s", err))
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}
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err = formparser.Date(form.Get("fictionalDate"), &page.FictionalDate, !page.FictionalDate.IsZero())
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if err != nil {
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errors = append(errors, fmt.Errorf("Fictonal Date: %s", err))
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}
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page.Dated = form.Get("dated") != ""
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page.Published = form.Get("published") != ""
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page.Unlisted = form.Get("unlisted") != ""
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page.Specific = form.Get("specific") != ""
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page.Indexed = form.Get("indexed") != ""
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err = formparser.String(form.Get("backgroundUrl"), &page.BackgroundURL, 0, 255)
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if err != nil {
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errors = append(errors, fmt.Errorf("Background URL: %s", err))
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}
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err = formparser.Select(form.Get("type"), &page.Type, PageTypes, page.Type != "")
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if err != nil {
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errors = append(errors, fmt.Errorf("Category: %s", err))
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}
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err = formparser.String(form.Get("source"), &page.Source, 0, 102400)
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if err != nil {
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errors = append(errors, fmt.Errorf("Content is too long, max: 100 KB (~17,000 words)"))
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}
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if len(errors) > 0 {
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errors = nil
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}
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return errors
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}
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// Standardize page ID generation
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func (page *Page) generateID() {
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page.ID = generate.FriendlyID(16)
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}
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// FindPage finds a page by ID. The Header model handles
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// listning pages
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func FindPage(id string) (*Page, error) {
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const selectPage = `
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SELECT id,name,author,category,fictional_date,publish_date,edit_date,dated,published,
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unlisted,page.specific,indexed,type,source,background_url
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FROM page
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WHERE id=?
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`
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const selectPageTags = `
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SELECT tag.id,tag.type,tag.name
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FROM page_tag
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RIGHT JOIN tag ON (tag.id = page_tag.tag_id)
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WHERE page_tag.page_id = ?
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`
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db := server.Main.DB
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rows, err := db.Query(selectPage, id)
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if err != nil {
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return nil, err
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}
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defer rows.Close()
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if !rows.Next() {
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return nil, errors.New("not found")
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}
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page := new(Page)
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err = parsePage(page, rows)
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if err != nil {
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return nil, err
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}
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rows, err = db.Query(selectPageTags, page.ID)
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if err != nil {
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return nil, err
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}
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page.Tags = make([]Tag, 0, 64)
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for rows.Next() {
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tag := Tag{}
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rows.Scan(&tag.ID, &tag.Type, &tag.Name)
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page.Tags = append(page.Tags, tag)
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}
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return page, nil
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}
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func parsePage(page *Page, rows *sql.Rows) error {
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var fictionalDate, publishDate, editDate string
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var bgURL *string
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err := rows.Scan(
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&page.ID, &page.Name, &page.Author, &page.Category, &fictionalDate,
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&publishDate, &editDate, &page.Dated, &page.Published, &page.Unlisted,
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&page.Specific, &page.Indexed, &page.Type, &page.Source, &bgURL,
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)
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if err != nil {
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return err
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}
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if bgURL != nil {
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page.BackgroundURL = *bgURL
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}
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page.FictionalDate, err = time.Parse("2006-01-02 15:04:05", fictionalDate)
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if err != nil {
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return err
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}
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page.PublishDate, err = time.Parse("2006-01-02 15:04:05", publishDate)
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if err != nil {
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return err
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}
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page.EditDate, err = time.Parse("2006-01-02 15:04:05", editDate)
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if err != nil {
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return err
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}
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return nil
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}
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