426 lines
11 KiB
Go
426 lines
11 KiB
Go
package website
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import (
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"fmt"
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"net/http"
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"strconv"
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"git.handmade.network/hmn/hmn/src/db"
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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/oops"
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"git.handmade.network/hmn/hmn/src/templates"
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)
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func BlogThread(c *RequestContext) ResponseData {
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type blogPostData struct {
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templates.BaseData
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Thread templates.Thread
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MainPost templates.Post
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Comments []templates.Post
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ReplyLink string
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LoginLink string
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}
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cd, ok := getCommonBlogData(c)
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if !ok {
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return FourOhFour(c)
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}
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thread, posts := FetchThreadPostsAndStuff(
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c.Context(),
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c.Conn,
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cd.ThreadID,
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0, 0,
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)
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var templatePosts []templates.Post
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for _, p := range posts {
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post := templates.PostToTemplate(&p.Post, p.Author, c.Theme)
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post.AddContentVersion(p.CurrentVersion, p.Editor)
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addBlogUrlsToPost(&post, c.CurrentProject.Slug, &p.Thread, p.Post.ID)
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if p.ReplyPost != nil {
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reply := templates.PostToTemplate(p.ReplyPost, p.ReplyAuthor, c.Theme)
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addBlogUrlsToPost(&reply, c.CurrentProject.Slug, &p.Thread, p.Post.ID)
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post.ReplyPost = &reply
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}
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templatePosts = append(templatePosts, post)
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}
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baseData := getBaseData(c)
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baseData.Title = thread.Title
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var res ResponseData
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res.MustWriteTemplate("blog_post.html", blogPostData{
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BaseData: baseData,
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Thread: templates.ThreadToTemplate(&thread),
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MainPost: templatePosts[0],
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Comments: templatePosts[1:],
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ReplyLink: hmnurl.BuildBlogPostReply(c.CurrentProject.Slug, cd.ThreadID, posts[0].Post.ID),
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LoginLink: hmnurl.BuildLoginPage(c.FullUrl()),
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}, c.Perf)
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return res
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}
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func BlogPostRedirectToThread(c *RequestContext) ResponseData {
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cd, ok := getCommonBlogData(c)
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if !ok {
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return FourOhFour(c)
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}
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thread := FetchThread(c.Context(), c.Conn, cd.ThreadID)
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threadUrl := hmnurl.BuildBlogThread(c.CurrentProject.Slug, cd.ThreadID, thread.Title)
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return c.Redirect(threadUrl, http.StatusFound)
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}
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func BlogNewThread(c *RequestContext) ResponseData {
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baseData := getBaseData(c)
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baseData.Title = fmt.Sprintf("Create New Post | %s", c.CurrentProject.Name)
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baseData.MathjaxEnabled = true
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// TODO(ben): Set breadcrumbs
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editData := getEditorDataForNew(baseData, nil)
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editData.SubmitUrl = hmnurl.BuildBlogNewThread(c.CurrentProject.Slug)
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editData.SubmitLabel = "Create Post"
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var res ResponseData
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res.MustWriteTemplate("editor.html", editData, c.Perf)
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return res
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}
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func BlogNewThreadSubmit(c *RequestContext) ResponseData {
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tx, err := c.Conn.Begin(c.Context())
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if err != nil {
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panic(err)
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}
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defer tx.Rollback(c.Context())
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err = c.Req.ParseForm()
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if err != nil {
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return ErrorResponse(http.StatusBadRequest, oops.New(err, "the form data was invalid"))
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}
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title := c.Req.Form.Get("title")
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unparsed := c.Req.Form.Get("body")
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if title == "" {
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return RejectRequest(c, "You must provide a title for your post.")
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}
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if unparsed == "" {
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return RejectRequest(c, "You must provide a body for your post.")
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}
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// Create thread
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var threadId int
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err = tx.QueryRow(c.Context(),
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`
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INSERT INTO handmade_thread (title, type, project_id, first_id, last_id)
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VALUES ($1, $2, $3, $4, $5)
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RETURNING id
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`,
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title,
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models.ThreadTypeProjectBlogPost,
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c.CurrentProject.ID,
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-1,
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-1,
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).Scan(&threadId)
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if err != nil {
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panic(oops.New(err, "failed to create thread"))
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}
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// Create everything else
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CreateNewPost(c.Context(), tx, c.CurrentProject.ID, threadId, models.ThreadTypeProjectBlogPost, c.CurrentUser.ID, nil, unparsed, c.Req.Host)
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err = tx.Commit(c.Context())
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if err != nil {
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return ErrorResponse(http.StatusInternalServerError, oops.New(err, "failed to create new blog post"))
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}
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newThreadUrl := hmnurl.BuildBlogThread(c.CurrentProject.Slug, threadId, title)
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return c.Redirect(newThreadUrl, http.StatusSeeOther)
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}
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func BlogPostEdit(c *RequestContext) ResponseData {
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cd, ok := getCommonBlogData(c)
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if !ok {
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return FourOhFour(c)
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}
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if !UserCanEditPost(c.Context(), c.Conn, *c.CurrentUser, cd.PostID) {
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return FourOhFour(c)
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}
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postData := FetchPostAndStuff(c.Context(), c.Conn, cd.ThreadID, cd.PostID)
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baseData := getBaseData(c)
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if postData.Thread.FirstID == postData.Post.ID {
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baseData.Title = fmt.Sprintf("Editing \"%s\" | %s", postData.Thread.Title, c.CurrentProject.Name)
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} else {
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baseData.Title = fmt.Sprintf("Editing Post | %s", c.CurrentProject.Name)
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}
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baseData.MathjaxEnabled = true
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// TODO(ben): Set breadcrumbs
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editData := getEditorDataForEdit(baseData, postData)
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editData.SubmitUrl = hmnurl.BuildBlogPostEdit(c.CurrentProject.Slug, cd.ThreadID, cd.PostID)
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editData.SubmitLabel = "Submit Edited Post"
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if postData.Thread.FirstID != postData.Post.ID {
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editData.SubmitLabel = "Submit Edited Comment"
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}
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var res ResponseData
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res.MustWriteTemplate("editor.html", editData, c.Perf)
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return res
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}
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func BlogPostEditSubmit(c *RequestContext) ResponseData {
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cd, ok := getCommonBlogData(c)
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if !ok {
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return FourOhFour(c)
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}
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if !UserCanEditPost(c.Context(), c.Conn, *c.CurrentUser, cd.PostID) {
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return FourOhFour(c)
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}
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tx, err := c.Conn.Begin(c.Context())
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if err != nil {
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panic(err)
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}
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defer tx.Rollback(c.Context())
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postData := FetchPostAndStuff(c.Context(), tx, cd.ThreadID, cd.PostID)
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c.Req.ParseForm()
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title := c.Req.Form.Get("title")
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unparsed := c.Req.Form.Get("body")
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editReason := c.Req.Form.Get("editreason")
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if title != "" && postData.Thread.FirstID != postData.Post.ID {
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return RejectRequest(c, "You can only edit the title by editing the first post.")
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}
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if unparsed == "" {
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return RejectRequest(c, "You must provide a post body.")
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}
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CreatePostVersion(c.Context(), tx, postData.Post.ID, unparsed, c.Req.Host, editReason, &c.CurrentUser.ID)
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err = tx.Commit(c.Context())
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if err != nil {
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return ErrorResponse(http.StatusInternalServerError, oops.New(err, "failed to edit blog post"))
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}
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postUrl := hmnurl.BuildBlogThreadWithPostHash(c.CurrentProject.Slug, cd.ThreadID, postData.Thread.Title, cd.PostID)
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return c.Redirect(postUrl, http.StatusSeeOther)
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}
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func BlogPostReply(c *RequestContext) ResponseData {
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cd, ok := getCommonBlogData(c)
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if !ok {
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return FourOhFour(c)
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}
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postData := FetchPostAndStuff(c.Context(), c.Conn, cd.ThreadID, cd.PostID)
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baseData := getBaseData(c)
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baseData.Title = fmt.Sprintf("Replying to comment in \"%s\" | %s", postData.Thread.Title, c.CurrentProject.Name)
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baseData.MathjaxEnabled = true
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// TODO(ben): Set breadcrumbs
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replyPost := templates.PostToTemplate(&postData.Post, postData.Author, c.Theme)
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replyPost.AddContentVersion(postData.CurrentVersion, postData.Editor)
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editData := getEditorDataForNew(baseData, &replyPost)
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editData.SubmitUrl = hmnurl.BuildBlogPostReply(c.CurrentProject.Slug, cd.ThreadID, cd.PostID)
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editData.SubmitLabel = "Submit Reply"
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var res ResponseData
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res.MustWriteTemplate("editor.html", editData, c.Perf)
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return res
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}
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func BlogPostReplySubmit(c *RequestContext) ResponseData {
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cd, ok := getCommonBlogData(c)
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if !ok {
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return FourOhFour(c)
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}
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tx, err := c.Conn.Begin(c.Context())
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if err != nil {
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panic(err)
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}
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defer tx.Rollback(c.Context())
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err = c.Req.ParseForm()
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if err != nil {
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return ErrorResponse(http.StatusBadRequest, oops.New(nil, "the form data was invalid"))
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}
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unparsed := c.Req.Form.Get("body")
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if unparsed == "" {
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return RejectRequest(c, "Your reply cannot be empty.")
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}
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newPostId, _ := CreateNewPost(c.Context(), tx, c.CurrentProject.ID, cd.ThreadID, models.ThreadTypeProjectBlogPost, c.CurrentUser.ID, &cd.PostID, unparsed, c.Req.Host)
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err = tx.Commit(c.Context())
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if err != nil {
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return ErrorResponse(http.StatusInternalServerError, oops.New(err, "failed to reply to blog post"))
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}
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newPostUrl := hmnurl.BuildBlogPost(c.CurrentProject.Slug, cd.ThreadID, newPostId)
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return c.Redirect(newPostUrl, http.StatusSeeOther)
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}
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func BlogPostDelete(c *RequestContext) ResponseData {
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cd, ok := getCommonBlogData(c)
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if !ok {
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return FourOhFour(c)
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}
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if !UserCanEditPost(c.Context(), c.Conn, *c.CurrentUser, cd.PostID) {
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return FourOhFour(c)
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}
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postData := FetchPostAndStuff(c.Context(), c.Conn, cd.ThreadID, cd.PostID)
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baseData := getBaseData(c)
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if postData.Thread.FirstID == postData.Post.ID {
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baseData.Title = fmt.Sprintf("Deleting \"%s\" | %s", postData.Thread.Title, c.CurrentProject.Name)
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} else {
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baseData.Title = fmt.Sprintf("Deleting comment in \"%s\" | %s", postData.Thread.Title, c.CurrentProject.Name)
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}
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baseData.MathjaxEnabled = true
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// TODO(ben): Set breadcrumbs
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templatePost := templates.PostToTemplate(&postData.Post, postData.Author, c.Theme)
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templatePost.AddContentVersion(postData.CurrentVersion, postData.Editor)
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type blogPostDeleteData struct {
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templates.BaseData
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Post templates.Post
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SubmitUrl string
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}
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var res ResponseData
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res.MustWriteTemplate("blog_post_delete.html", blogPostDeleteData{
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BaseData: baseData,
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SubmitUrl: hmnurl.BuildBlogPostDelete(c.CurrentProject.Slug, cd.ThreadID, cd.PostID),
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Post: templatePost,
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}, c.Perf)
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return res
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}
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func BlogPostDeleteSubmit(c *RequestContext) ResponseData {
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cd, ok := getCommonBlogData(c)
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if !ok {
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return FourOhFour(c)
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}
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if !UserCanEditPost(c.Context(), c.Conn, *c.CurrentUser, cd.PostID) {
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return FourOhFour(c)
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}
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tx, err := c.Conn.Begin(c.Context())
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if err != nil {
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panic(err)
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}
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defer tx.Rollback(c.Context())
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threadDeleted := DeletePost(c.Context(), tx, cd.ThreadID, cd.PostID)
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err = tx.Commit(c.Context())
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if err != nil {
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return ErrorResponse(http.StatusInternalServerError, oops.New(err, "failed to delete post"))
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}
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if threadDeleted {
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projectUrl := hmnurl.BuildProjectHomepage(c.CurrentProject.Slug)
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return c.Redirect(projectUrl, http.StatusSeeOther)
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} else {
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thread := FetchThread(c.Context(), c.Conn, cd.ThreadID)
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threadUrl := hmnurl.BuildBlogThread(c.CurrentProject.Slug, thread.ID, thread.Title)
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return c.Redirect(threadUrl, http.StatusSeeOther)
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}
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}
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type commonBlogData struct {
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c *RequestContext
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ThreadID int
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PostID int
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}
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func getCommonBlogData(c *RequestContext) (commonBlogData, bool) {
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c.Perf.StartBlock("BLOGS", "Fetch common blog data")
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defer c.Perf.EndBlock()
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res := commonBlogData{
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c: c,
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}
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if threadIdStr, hasThreadId := c.PathParams["threadid"]; hasThreadId {
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threadId, err := strconv.Atoi(threadIdStr)
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if err != nil {
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return commonBlogData{}, false
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}
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res.ThreadID = threadId
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c.Perf.StartBlock("SQL", "Verify that the thread exists")
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threadExists, err := db.QueryBool(c.Context(), c.Conn,
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`
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SELECT COUNT(*) > 0
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FROM handmade_thread
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WHERE
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id = $1
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AND project_id = $2
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`,
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res.ThreadID,
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c.CurrentProject.ID,
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)
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c.Perf.EndBlock()
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if err != nil {
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panic(err)
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}
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if !threadExists {
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return commonBlogData{}, false
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}
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}
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if postIdStr, hasPostId := c.PathParams["postid"]; hasPostId {
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postId, err := strconv.Atoi(postIdStr)
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if err != nil {
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return commonBlogData{}, false
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}
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res.PostID = postId
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c.Perf.StartBlock("SQL", "Verify that the post exists")
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postExists, err := db.QueryBool(c.Context(), c.Conn,
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`
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SELECT COUNT(*) > 0
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FROM handmade_post
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WHERE
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id = $1
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AND thread_id = $2
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`,
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res.PostID,
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res.ThreadID,
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)
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c.Perf.EndBlock()
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if err != nil {
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panic(err)
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}
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if !postExists {
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return commonBlogData{}, false
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}
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}
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return res, true
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}
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func addBlogUrlsToPost(p *templates.Post, projectSlug string, thread *models.Thread, postId int) {
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p.Url = hmnurl.BuildBlogThreadWithPostHash(projectSlug, thread.ID, thread.Title, postId)
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p.DeleteUrl = hmnurl.BuildBlogPostDelete(projectSlug, thread.ID, postId)
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p.EditUrl = hmnurl.BuildBlogPostEdit(projectSlug, thread.ID, postId)
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p.ReplyUrl = hmnurl.BuildBlogPostReply(projectSlug, thread.ID, postId)
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}
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