376 lines
10 KiB
Go
376 lines
10 KiB
Go
package website
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import (
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"context"
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"errors"
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"fmt"
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"net/http"
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"net/url"
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"time"
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"git.handmade.network/hmn/hmn/src/db"
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"git.handmade.network/hmn/hmn/src/hmndata"
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"git.handmade.network/hmn/hmn/src/hmnurl"
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"git.handmade.network/hmn/hmn/src/models"
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"git.handmade.network/hmn/hmn/src/parsing"
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"git.handmade.network/hmn/hmn/src/templates"
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"git.handmade.network/hmn/hmn/src/utils"
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)
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func EducationIndex(c *RequestContext) ResponseData {
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type indexData struct {
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templates.BaseData
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}
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tmpl := indexData{
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BaseData: getBaseData(c, "Handmade Education", nil),
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}
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var res ResponseData
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res.MustWriteTemplate("education_index.html", tmpl, c.Perf)
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return res
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}
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func EducationGlossary(c *RequestContext) ResponseData {
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type glossaryData struct {
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templates.BaseData
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}
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tmpl := glossaryData{
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BaseData: getBaseData(c, "Handmade Education", nil),
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}
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var res ResponseData
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res.MustWriteTemplate("education_glossary.html", tmpl, c.Perf)
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return res
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}
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func EducationArticle(c *RequestContext) ResponseData {
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type articleData struct {
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templates.BaseData
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Article templates.EduArticle
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}
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article, err := fetchEduArticle(c, c.Conn, c.PathParams["slug"], models.EduArticleTypeArticle)
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if errors.Is(err, db.NotFound) {
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return FourOhFour(c)
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} else if err != nil {
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return c.ErrorResponse(http.StatusInternalServerError, err)
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}
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tmpl := articleData{
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BaseData: getBaseData(c, "Handmade Education", nil),
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Article: templates.EducationArticleToTemplate(article),
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}
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var res ResponseData
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res.MustWriteTemplate("education_article.html", tmpl, c.Perf)
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return res
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}
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func EducationAdmin(c *RequestContext) ResponseData {
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articles, err := hmndata.FetchEduArticles(c, c.Conn, c.CurrentUser, hmndata.EduArticleQuery{})
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if err != nil {
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return c.ErrorResponse(http.StatusInternalServerError, err)
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}
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var tmplArticles []templates.EduArticle
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var tmplGlossaryTerms []templates.EduArticle
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for _, a := range articles {
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tmpl := templates.EducationArticleToTemplate(&a.Article)
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switch a.Article.Type {
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case models.EduArticleTypeArticle:
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tmplArticles = append(tmplArticles, tmpl)
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case models.EduArticleTypeGlossary:
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tmplGlossaryTerms = append(tmplGlossaryTerms, tmpl)
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}
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}
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type adminData struct {
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templates.BaseData
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Articles []templates.EduArticle
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GlossaryTerms []templates.EduArticle
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}
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tmpl := adminData{
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BaseData: getBaseData(c, "Education Admin", nil),
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Articles: tmplArticles,
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GlossaryTerms: tmplGlossaryTerms,
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}
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var res ResponseData
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res.MustWriteTemplate("education_admin.html", tmpl, c.Perf)
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return res
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}
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func EducationArticleNew(c *RequestContext) ResponseData {
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type adminData struct {
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editorData
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Article map[string]interface{}
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}
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tmpl := adminData{
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editorData: getEditorDataForEduArticle(c.UrlContext, c.CurrentUser, getBaseData(c, "New Education Article", nil), nil),
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}
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tmpl.editorData.SubmitUrl = hmnurl.BuildEducationArticleNew()
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var res ResponseData
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res.MustWriteTemplate("editor.html", tmpl, c.Perf)
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return res
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}
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func EducationArticleNewSubmit(c *RequestContext) ResponseData {
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form, err := c.GetFormValues()
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if err != nil {
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return c.ErrorResponse(http.StatusBadRequest, err)
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}
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art, ver := getEduArticleFromForm(form)
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dupe := 0 < db.MustQueryOneScalar[int](c, c.Conn,
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`
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SELECT COUNT(*) FROM education_article
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WHERE slug = $1
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`,
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art.Slug,
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)
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if dupe {
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return c.RejectRequest("A resource already exists with that slug.")
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}
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createEduArticle(c, art, ver)
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res := c.Redirect(eduArticleURL(&art), http.StatusSeeOther)
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res.AddFutureNotice("success", "Created new education article.")
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return res
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}
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func EducationArticleEdit(c *RequestContext) ResponseData {
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type adminData struct {
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editorData
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Article templates.EduArticle
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}
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article, err := fetchEduArticle(c, c.Conn, c.PathParams["slug"], 0)
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if errors.Is(err, db.NotFound) {
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return FourOhFour(c)
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} else if err != nil {
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panic(err)
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}
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tmpl := adminData{
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editorData: getEditorDataForEduArticle(c.UrlContext, c.CurrentUser, getBaseData(c, "Edit Education Article", nil), article),
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Article: templates.EducationArticleToTemplate(article),
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}
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tmpl.editorData.SubmitUrl = hmnurl.BuildEducationArticleEdit(c.PathParams["slug"])
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var res ResponseData
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res.MustWriteTemplate("editor.html", tmpl, c.Perf)
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return res
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}
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func EducationArticleEditSubmit(c *RequestContext) ResponseData {
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form, err := c.GetFormValues()
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if err != nil {
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return c.ErrorResponse(http.StatusBadRequest, err)
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}
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_, err = fetchEduArticle(c, c.Conn, c.PathParams["slug"], 0)
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if errors.Is(err, db.NotFound) {
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return FourOhFour(c)
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} else if err != nil {
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panic(err)
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}
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art, ver := getEduArticleFromForm(form)
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updateEduArticle(c, c.PathParams["slug"], art, ver)
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res := c.Redirect(eduArticleURL(&art), http.StatusSeeOther)
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res.AddFutureNotice("success", "Edited education article.")
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return res
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}
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func EducationArticleDelete(c *RequestContext) ResponseData {
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article, err := fetchEduArticle(c, c.Conn, c.PathParams["slug"], 0)
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if errors.Is(err, db.NotFound) {
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return FourOhFour(c)
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} else if err != nil {
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panic(err)
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}
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type deleteData struct {
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templates.BaseData
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Article templates.EduArticle
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SubmitUrl string
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}
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baseData := getBaseData(c, fmt.Sprintf("Deleting \"%s\"", article.Title), nil)
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var res ResponseData
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res.MustWriteTemplate("education_article_delete.html", deleteData{
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BaseData: baseData,
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Article: templates.EducationArticleToTemplate(article),
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SubmitUrl: hmnurl.BuildEducationArticleDelete(article.Slug),
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}, c.Perf)
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return res
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}
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func EducationArticleDeleteSubmit(c *RequestContext) ResponseData {
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_, err := c.Conn.Exec(c, `DELETE FROM education_article WHERE slug = $1`, c.PathParams["slug"])
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if err != nil {
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panic(err)
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}
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res := c.Redirect(hmnurl.BuildEducationIndex(), http.StatusSeeOther)
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res.AddFutureNotice("success", "Article deleted.")
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return res
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}
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func fetchEduArticle(ctx context.Context, dbConn db.ConnOrTx, slug string, t models.EduArticleType) (*models.EduArticle, error) {
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type eduArticleResult struct {
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Article models.EduArticle `db:"a"`
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CurrentVersion models.EduArticleVersion `db:"v"`
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}
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var qb db.QueryBuilder
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qb.Add(
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`
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SELECT $columns
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FROM
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education_article AS a
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JOIN education_article_version AS v ON a.current_version = v.id
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WHERE
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slug = $?
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`,
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slug,
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)
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if t != 0 {
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qb.Add(`AND type = $?`, t)
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}
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res, err := db.QueryOne[eduArticleResult](ctx, dbConn, qb.String(), qb.Args()...)
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if err != nil {
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return nil, err
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}
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res.Article.CurrentVersion = &res.CurrentVersion
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return &res.Article, nil
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}
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func getEditorDataForEduArticle(
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urlContext *hmnurl.UrlContext,
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currentUser *models.User,
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baseData templates.BaseData,
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article *models.EduArticle,
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) editorData {
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result := editorData{
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BaseData: baseData,
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SubmitLabel: "Submit",
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CanEditPostTitle: true,
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MaxFileSize: AssetMaxSize(currentUser),
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UploadUrl: urlContext.BuildAssetUpload(),
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ShowEduOptions: true,
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}
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if article != nil {
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result.PostTitle = article.Title
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result.EditInitialContents = article.CurrentVersion.ContentRaw
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}
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return result
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}
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func getEduArticleFromForm(form url.Values) (art models.EduArticle, ver models.EduArticleVersion) {
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art.Title = form.Get("title")
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art.Slug = form.Get("slug")
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art.Description = form.Get("description")
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switch form.Get("type") {
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case "article":
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art.Type = models.EduArticleTypeArticle
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case "glossary":
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art.Type = models.EduArticleTypeGlossary
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default:
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panic(fmt.Errorf("unknown education article type: %s", form.Get("type")))
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}
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art.Published = form.Get("published") != ""
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// TODO: Education-specific Markdown
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ver.ContentRaw = form.Get("body")
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ver.ContentHTML = parsing.ParseMarkdown(ver.ContentRaw, parsing.ForumRealMarkdown)
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return
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}
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func createEduArticle(c *RequestContext, art models.EduArticle, ver models.EduArticleVersion) {
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tx := utils.Must1(c.Conn.Begin(c))
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defer tx.Rollback(c)
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{
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articleID := db.MustQueryOneScalar[int](c, tx,
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`
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INSERT INTO education_article (title, slug, description, published, type, current_version)
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VALUES ($1, $2, $3, $4, $5, -1)
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RETURNING id
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`,
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art.Title, art.Slug, art.Description, art.Published, art.Type,
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)
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versionID := db.MustQueryOneScalar[int](c, tx,
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`
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INSERT INTO education_article_version (article_id, date, editor_id, content_raw, content_html)
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VALUES ($1, $2, $3, $4, $5 )
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RETURNING id
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`,
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articleID, time.Now(), c.CurrentUser.ID, ver.ContentRaw, ver.ContentHTML,
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)
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tx.Exec(c,
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`UPDATE education_article SET current_version = $1 WHERE id = $2`,
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versionID, articleID,
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)
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}
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utils.Must(tx.Commit(c))
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}
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func updateEduArticle(c *RequestContext, slug string, art models.EduArticle, ver models.EduArticleVersion) {
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tx := utils.Must1(c.Conn.Begin(c))
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defer tx.Rollback(c)
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{
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articleID := db.MustQueryOneScalar[int](c, tx,
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`SELECT id FROM education_article WHERE slug = $1`,
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slug,
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)
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versionID := db.MustQueryOneScalar[int](c, tx,
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`
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INSERT INTO education_article_version (article_id, date, editor_id, content_raw, content_html)
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VALUES ($1, $2, $3, $4, $5 )
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RETURNING id
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`,
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articleID, time.Now(), c.CurrentUser.ID, ver.ContentRaw, ver.ContentHTML,
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)
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tx.Exec(c,
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`
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UPDATE education_article
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SET
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title = $1, slug = $2, description = $3, published = $4, type = $5,
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current_version = $6
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WHERE
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id = $7
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`,
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art.Title, art.Slug, art.Description, art.Published, art.Type,
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versionID,
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articleID,
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)
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}
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utils.Must(tx.Commit(c))
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}
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func eduArticleURL(a *models.EduArticle) string {
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switch a.Type {
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case models.EduArticleTypeArticle:
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return hmnurl.BuildEducationArticle(a.Slug)
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case models.EduArticleTypeGlossary:
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return hmnurl.BuildEducationGlossary(a.Slug)
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default:
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panic("unknown education article type")
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}
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}
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