Part 1 of URL robustification

src/hmnurl/hmnurl.go

@@ -18,7 +18,11 @@ type Q struct {
 var baseUrlParsed url.URL
 
 func init() {
-	parsed, err := url.Parse(config.Config.BaseUrl)
+	SetGlobalBaseUrl(config.Config.BaseUrl)
+}
+
+func SetGlobalBaseUrl(fullBaseUrl string) {
+	parsed, err := url.Parse(fullBaseUrl)
 	if err != nil {
 		panic(oops.New(err, "could not parse base URL"))
 	}

src/hmnurl/hmnurl_test.go

@@ -1,6 +1,8 @@
 package hmnurl
 
 import (
+	"net/url"
+	"regexp"
 	"testing"
 
 	"git.handmade.network/hmn/hmn/src/config"
@@ -8,10 +10,10 @@ import (
 )
 
 func TestUrl(t *testing.T) {
-	defer func(original string) {
+	defer func() {
-		config.Config.BaseUrl = original
+		SetGlobalBaseUrl(config.Config.BaseUrl)
-	}(config.Config.BaseUrl)
+	}()
-	config.Config.BaseUrl = "http://handmade.test"
+	SetGlobalBaseUrl("http://handmade.test")
 
 	t.Run("no query", func(t *testing.T) {
 		result := Url("/test/foo", nil)
@@ -22,3 +24,123 @@ func TestUrl(t *testing.T) {
 		assert.Equal(t, "http://handmade.test/test/foo?bar=baz&zig%3F%3F=zig+%26+zag%21%21", result)
 	})
 }
+
+func TestHomepage(t *testing.T) {
+	AssertRegexMatch(t, BuildHomepage(), RegexHomepage, nil)
+}
+
+func TestLogin(t *testing.T) {
+	AssertRegexMatch(t, BuildLogin(), RegexLogin, nil)
+}
+
+func TestLogout(t *testing.T) {
+	AssertRegexMatch(t, BuildLogout(), RegexLogout, nil)
+}
+
+func TestStaticPages(t *testing.T) {
+	AssertRegexMatch(t, BuildManifesto(), RegexManifesto, nil)
+	AssertRegexMatch(t, BuildAbout(), RegexAbout, nil)
+	AssertRegexMatch(t, BuildCodeOfConduct(), RegexCodeOfConduct, nil)
+	AssertRegexMatch(t, BuildCommunicationGuidelines(), RegexCommunicationGuidelines, nil)
+	AssertRegexMatch(t, BuildContactPage(), RegexContactPage, nil)
+	AssertRegexMatch(t, BuildMonthlyUpdatePolicy(), RegexMonthlyUpdatePolicy, nil)
+	AssertRegexMatch(t, BuildProjectSubmissionGuidelines(), RegexProjectSubmissionGuidelines, nil)
+}
+
+func TestFeed(t *testing.T) {
+	AssertRegexMatch(t, BuildFeed(), RegexFeed, nil)
+	assert.Equal(t, BuildFeed(), BuildFeedWithPage(1))
+	AssertRegexMatch(t, BuildFeedWithPage(1), RegexFeed, nil)
+	AssertRegexMatch(t, "/feed/1", RegexFeed, nil) // NOTE(asaf): We should never build this URL, but we should still accept it.
+	AssertRegexMatch(t, BuildFeedWithPage(5), RegexFeed, map[string]string{"page": "5"})
+	assert.Panics(t, func() { BuildFeedWithPage(-1) })
+	assert.Panics(t, func() { BuildFeedWithPage(0) })
+}
+
+func TestForumThread(t *testing.T) {
+	AssertRegexMatch(t, BuildForumThread("", nil, 1, 1), RegexForumThread, map[string]string{"threadid": "1"})
+	AssertRegexMatch(t, BuildForumThread("", []string{"wip"}, 1, 2), RegexForumThread, map[string]string{"cats": "forums/wip", "page": "2", "threadid": "1"})
+	AssertRegexMatch(t, BuildForumThread("", []string{"sub", "wip"}, 1, 2), RegexForumThread, map[string]string{"cats": "forums/sub/wip", "page": "2", "threadid": "1"})
+	AssertSubdomain(t, BuildForumThread("hmn", nil, 1, 1), "")
+	AssertSubdomain(t, BuildForumThread("", nil, 1, 1), "")
+	AssertSubdomain(t, BuildForumThread("hero", nil, 1, 1), "hero")
+	assert.Panics(t, func() { BuildForumThread("", []string{"", "wip"}, 1, 1) })
+	assert.Panics(t, func() { BuildForumThread("", []string{" ", "wip"}, 1, 1) })
+	assert.Panics(t, func() { BuildForumThread("", []string{"wip/jobs"}, 1, 1) })
+}
+
+func TestForumCategory(t *testing.T) {
+	AssertRegexMatch(t, BuildForumCategory("", nil, 1), RegexForumCategory, nil)
+	AssertRegexMatch(t, BuildForumCategory("", []string{"wip"}, 2), RegexForumCategory, map[string]string{"cats": "forums/wip", "page": "2"})
+	AssertRegexMatch(t, BuildForumCategory("", []string{"sub", "wip"}, 2), RegexForumCategory, map[string]string{"cats": "forums/sub/wip", "page": "2"})
+	AssertSubdomain(t, BuildForumCategory("hmn", nil, 1), "")
+	AssertSubdomain(t, BuildForumCategory("", nil, 1), "")
+	AssertSubdomain(t, BuildForumCategory("hero", nil, 1), "hero")
+	assert.Panics(t, func() { BuildForumCategory("", []string{"", "wip"}, 1) })
+	assert.Panics(t, func() { BuildForumCategory("", []string{" ", "wip"}, 1) })
+	assert.Panics(t, func() { BuildForumCategory("", []string{"wip/jobs"}, 1) })
+}
+
+func TestProjectCSS(t *testing.T) {
+	AssertRegexMatch(t, BuildProjectCSS("000000"), RegexProjectCSS, nil)
+}
+
+func TestPublic(t *testing.T) {
+	AssertRegexMatch(t, BuildPublic("test"), RegexPublic, nil)
+	AssertRegexMatch(t, BuildPublic("/test"), RegexPublic, nil)
+	AssertRegexMatch(t, BuildPublic("/test/"), RegexPublic, nil)
+	AssertRegexMatch(t, BuildPublic("/test/thing/image.png"), RegexPublic, nil)
+	assert.Panics(t, func() { BuildPublic("") })
+	assert.Panics(t, func() { BuildPublic("/") })
+	assert.Panics(t, func() { BuildPublic("/thing//image.png") })
+	assert.Panics(t, func() { BuildPublic("/thing/ /image.png") })
+}
+
+func AssertSubdomain(t *testing.T, fullUrl string, expectedSubdomain string) {
+	parsed, err := url.Parse(fullUrl)
+	ok := assert.Nilf(t, err, "Full url could not be parsed: %s", fullUrl)
+	if !ok {
+		return
+	}
+
+	fullHost := parsed.Host
+	if len(expectedSubdomain) == 0 {
+		assert.Equal(t, baseUrlParsed.Host, fullHost, "Did not expect a subdomain")
+	} else {
+		assert.Equalf(t, expectedSubdomain+"."+baseUrlParsed.Host, fullHost, "Subdomain mismatch")
+	}
+}
+
+func AssertRegexMatch(t *testing.T, fullUrl string, regex *regexp.Regexp, paramsToVerify map[string]string) {
+	parsed, err := url.Parse(fullUrl)
+	ok := assert.Nilf(t, err, "Full url could not be parsed: %s", fullUrl)
+	if !ok {
+		return
+	}
+
+	requestPath := parsed.Path
+	if len(requestPath) == 0 {
+		requestPath = "/"
+	}
+	match := regex.FindStringSubmatch(requestPath)
+	assert.NotNilf(t, match, "Url did not match regex: [%s] vs [%s]", requestPath, regex.String())
+
+	if paramsToVerify != nil {
+		subexpNames := regex.SubexpNames()
+		for i, matchedValue := range match {
+			paramName := subexpNames[i]
+			expectedValue, ok := paramsToVerify[paramName]
+			if ok {
+				assert.Equalf(t, expectedValue, matchedValue, "Param mismatch for [%s]", paramName)
+				delete(paramsToVerify, paramName)
+			}
+		}
+		if len(paramsToVerify) > 0 {
+			unmatchedParams := make([]string, 0, len(paramsToVerify))
+			for paramName := range paramsToVerify {
+				unmatchedParams = append(unmatchedParams, paramName)
+			}
+			assert.Fail(t, "Expected match groups not found", unmatchedParams)
+		}
+	}
+}

src/hmnurl/urls.go

@@ -0,0 +1,207 @@
+package hmnurl
+
+import (
+	"git.handmade.network/hmn/hmn/src/oops"
+	"regexp"
+	"strconv"
+	"strings"
+)
+
+var RegexHomepage *regexp.Regexp = regexp.MustCompile("^/$")
+
+func BuildHomepage() string {
+	return Url("/", nil)
+}
+
+var RegexLogin *regexp.Regexp = regexp.MustCompile("^/login$")
+
+func BuildLogin() string {
+	return Url("/login", nil)
+}
+
+var RegexLogout *regexp.Regexp = regexp.MustCompile("^/logout$")
+
+func BuildLogout() string {
+	return Url("/logout", nil)
+}
+
+var RegexManifesto *regexp.Regexp = regexp.MustCompile("^/manifesto$")
+
+func BuildManifesto() string {
+	return Url("/manifesto", nil)
+}
+
+var RegexAbout *regexp.Regexp = regexp.MustCompile("^/about$")
+
+func BuildAbout() string {
+	return Url("/about", nil)
+}
+
+var RegexCodeOfConduct *regexp.Regexp = regexp.MustCompile("^/code-of-conduct$")
+
+func BuildCodeOfConduct() string {
+	return Url("/code-of-conduct", nil)
+}
+
+var RegexCommunicationGuidelines *regexp.Regexp = regexp.MustCompile("^/communication-guidelines$")
+
+func BuildCommunicationGuidelines() string {
+	return Url("/communication-guidelines", nil)
+}
+
+var RegexContactPage *regexp.Regexp = regexp.MustCompile("^/contact$")
+
+func BuildContactPage() string {
+	return Url("/contact", nil)
+}
+
+var RegexMonthlyUpdatePolicy *regexp.Regexp = regexp.MustCompile("^/monthly-update-policy$")
+
+func BuildMonthlyUpdatePolicy() string {
+	return Url("/monthly-update-policy", nil)
+}
+
+var RegexProjectSubmissionGuidelines *regexp.Regexp = regexp.MustCompile("^/project-guidelines$")
+
+func BuildProjectSubmissionGuidelines() string {
+	return Url("/project-guidelines", nil)
+}
+
+var RegexFeed *regexp.Regexp = regexp.MustCompile(`^/feed(/(?P<page>.+)?)?$`)
+
+func BuildFeed() string {
+	return Url("/feed", nil)
+}
+
+func BuildFeedWithPage(page int) string {
+	if page < 1 {
+		panic(oops.New(nil, "Invalid feed page (%d), must be >= 1", page))
+	}
+	if page == 1 {
+		return BuildFeed()
+	}
+	return Url("/feed/"+strconv.Itoa(page), nil)
+}
+
+var RegexForumThread *regexp.Regexp = regexp.MustCompile(`^/(?P<cats>forums(/[^\d]+?)*)/t/(?P<threadid>\d+)(/(?P<page>\d+))?$`)
+
+func BuildForumThread(projectSlug string, subforums []string, threadId int, page int) string {
+	if projectSlug == "hmn" {
+		projectSlug = ""
+	}
+
+	if page < 1 {
+		panic(oops.New(nil, "Invalid forum thread page (%d), must be >= 1", page))
+	}
+
+	var builder strings.Builder
+	builder.WriteString("/forums")
+	for _, subforum := range subforums {
+		subforum = strings.TrimSpace(subforum)
+		if strings.Contains(subforum, "/") {
+			panic(oops.New(nil, "Tried building forum thread url with / in subforum name"))
+		}
+		if len(subforum) == 0 {
+			panic(oops.New(nil, "Tried building forum thread url with blank subforum"))
+		}
+		builder.WriteRune('/')
+		builder.WriteString(subforum)
+	}
+	builder.WriteString("/t/")
+	builder.WriteString(strconv.Itoa(threadId))
+	if page > 1 {
+		builder.WriteRune('/')
+		builder.WriteString(strconv.Itoa(page))
+	}
+
+	return ProjectUrl(builder.String(), nil, projectSlug)
+}
+
+var RegexForumCategory *regexp.Regexp = regexp.MustCompile(`^/(?P<cats>forums(/[^\d]+?)*)(/(?P<page>\d+))?$`)
+
+func BuildForumCategory(projectSlug string, subforums []string, page int) string {
+	if projectSlug == "hmn" {
+		projectSlug = ""
+	}
+
+	if page < 1 {
+		panic(oops.New(nil, "Invalid forum thread page (%d), must be >= 1", page))
+	}
+
+	var builder strings.Builder
+	builder.WriteString("/forums")
+	for _, subforum := range subforums {
+		subforum = strings.TrimSpace(subforum)
+		if strings.Contains(subforum, "/") {
+			panic(oops.New(nil, "Tried building forum thread url with / in subforum name"))
+		}
+		if len(subforum) == 0 {
+			panic(oops.New(nil, "Tried building forum thread url with blank subforum"))
+		}
+		builder.WriteRune('/')
+		builder.WriteString(subforum)
+	}
+	if page > 1 {
+		builder.WriteRune('/')
+		builder.WriteString(strconv.Itoa(page))
+	}
+
+	return ProjectUrl(builder.String(), nil, projectSlug)
+}
+
+var RegexForumPost *regexp.Regexp = regexp.MustCompile(``) // TODO(asaf): Complete this and test it
+
+func BuildForumPost(projectSlug string, subforums []string, threadId int, postId int) string {
+	if projectSlug == "hmn" {
+		projectSlug = ""
+	}
+
+	var builder strings.Builder
+	builder.WriteString("/forums")
+	for _, subforum := range subforums {
+		subforum = strings.TrimSpace(subforum)
+		if strings.Contains(subforum, "/") {
+			panic(oops.New(nil, "Tried building forum thread url with / in subforum name"))
+		}
+		if len(subforum) == 0 {
+			panic(oops.New(nil, "Tried building forum thread url with blank subforum"))
+		}
+		builder.WriteRune('/')
+		builder.WriteString(subforum)
+	}
+	builder.WriteString("/t/")
+	builder.WriteString(strconv.Itoa(threadId))
+	builder.WriteString("/p/")
+	builder.WriteString(strconv.Itoa(postId))
+
+	return ProjectUrl(builder.String(), nil, projectSlug)
+}
+
+var RegexProjectCSS *regexp.Regexp = regexp.MustCompile("^/assets/project.css$")
+
+func BuildProjectCSS(color string) string {
+	return Url("/assets/project.css", []Q{Q{"color", color}})
+}
+
+var RegexPublic *regexp.Regexp = regexp.MustCompile("^/public/.+$")
+
+func BuildPublic(filepath string) string {
+	filepath = strings.Trim(filepath, "/")
+	if len(strings.TrimSpace(filepath)) == 0 {
+		panic(oops.New(nil, "Attempted to build a /public url with no path"))
+	}
+	var builder strings.Builder
+	builder.WriteString("/public")
+	pathParts := strings.Split(filepath, "/")
+	for _, part := range pathParts {
+		part = strings.TrimSpace(part)
+		if len(part) == 0 {
+			panic(oops.New(nil, "Attempted to build a /public url with blank path segments: %s", filepath))
+		}
+		builder.WriteRune('/')
+		builder.WriteString(part)
+	}
+	return Url(builder.String(), nil)
+}
+
+var RegexCatchAll *regexp.Regexp = regexp.MustCompile("")

src/models/category.go

@@ -4,6 +4,7 @@ import (
 	"context"
 
 	"git.handmade.network/hmn/hmn/src/db"
+	"git.handmade.network/hmn/hmn/src/oops"
 	"github.com/jackc/pgx/v4/pgxpool"
 )
 
@@ -33,6 +34,96 @@ type Category struct {
 	Depth  int          `db:"depth"` // TODO: What is this?
 }
 
+type CategoryLineageBuilder struct {
+	Tree          map[int]*CategoryTreeNode
+	CategoryCache map[int][]*Category
+	SlugCache     map[int][]string
+}
+
+func MakeCategoryLineageBuilder(fullCategoryTree map[int]*CategoryTreeNode) *CategoryLineageBuilder {
+	return &CategoryLineageBuilder{
+		Tree:          fullCategoryTree,
+		CategoryCache: make(map[int][]*Category),
+		SlugCache:     make(map[int][]string),
+	}
+}
+
+func (cl *CategoryLineageBuilder) GetLineage(catId int) []*Category {
+	_, ok := cl.CategoryCache[catId]
+	if !ok {
+		cl.CategoryCache[catId] = cl.Tree[catId].GetLineage()
+	}
+	return cl.CategoryCache[catId]
+}
+
+func (cl *CategoryLineageBuilder) GetLineageSlugs(catId int) []string {
+	_, ok := cl.SlugCache[catId]
+	if !ok {
+		lineage := cl.GetLineage(catId)
+		result := make([]string, 0, len(lineage))
+		for _, cat := range lineage {
+			name := ""
+			if cat.Slug != nil {
+				name = *cat.Slug
+			}
+			result = append(result, name)
+		}
+		cl.SlugCache[catId] = result
+	}
+	return cl.SlugCache[catId]
+}
+
+type CategoryTreeNode struct {
+	Category
+	Parent *CategoryTreeNode
+}
+
+func (node *CategoryTreeNode) GetLineage() []*Category {
+	current := node
+	length := 0
+	for current != nil {
+		current = current.Parent
+		length += 1
+	}
+	result := make([]*Category, length)
+	current = node
+	for i := length - 1; i >= 0; i -= 1 {
+		result[i] = &current.Category
+		current = current.Parent
+	}
+	return result
+}
+
+func GetFullCategoryTree(ctx context.Context, conn *pgxpool.Pool) map[int]*CategoryTreeNode {
+	type categoryRow struct {
+		Cat Category `db:"cat"`
+	}
+	rows, err := db.Query(ctx, conn, categoryRow{},
+		`
+		SELECT $columns
+		FROM
+			handmade_category as cat
+		`,
+	)
+	if err != nil {
+		panic(oops.New(err, "Failed to fetch category tree"))
+	}
+
+	rowsSlice := rows.ToSlice()
+	catTreeMap := make(map[int]*CategoryTreeNode, len(rowsSlice))
+	for _, row := range rowsSlice {
+		cat := row.(*categoryRow).Cat
+		catTreeMap[cat.ID] = &CategoryTreeNode{Category: cat}
+	}
+
+	for _, node := range catTreeMap {
+		if node.ParentID != nil {
+			node.Parent = catTreeMap[*node.ParentID]
+		}
+	}
+	return catTreeMap
+}
+
 /*
 Gets the category and its parent categories, starting from the root and working toward the
 category itself. Useful for breadcrumbs and the like.

src/models/project.go

@@ -9,6 +9,18 @@ const HMNProjectID = 1
 
 var ProjectType = reflect.TypeOf(Project{})
 
+type ProjectLifecycle int
+
+const (
+	ProjectLifecycleUnapproved = iota
+	ProjectLifecycleApprovalRequired
+	ProjectLifecycleActive
+	ProjectLifecycleHiatus
+	ProjectLifecycleDead
+	ProjectLifecycleLTSRequired
+	ProjectLifecycleLTS
+)
+
 type Project struct {
 	ID int `db:"id"`
 
@@ -17,6 +29,8 @@ type Project struct {
 	Blurb       *string `db:"blurb"`
 	Description *string `db:"description"`
 
+	Lifecycle ProjectLifecycle `db:"lifecycle"`
+
 	Color1 string `db:"color_1"`
 	Color2 string `db:"color_2"`
 

src/utils/utils.go

@@ -0,0 +1,19 @@
+package utils
+
+func IntMin(a, b int) int {
+	if a < b {
+		return a
+	}
+	return b
+}
+
+func IntMax(a, b int) int {
+	if a > b {
+		return a
+	}
+	return b
+}
+
+func IntClamp(min, t, max int) int {
+	return IntMax(min, IntMin(t, max))
+}

src/website/feed.go

@@ -1,7 +1,6 @@
 package website
 
 import (
-	"fmt"
 	"math"
 	"net/http"
 	"strconv"
@@ -12,6 +11,7 @@ import (
 	"git.handmade.network/hmn/hmn/src/models"
 	"git.handmade.network/hmn/hmn/src/oops"
 	"git.handmade.network/hmn/hmn/src/templates"
+	"git.handmade.network/hmn/hmn/src/utils"
 )
 
 type FeedData struct {
@@ -32,7 +32,8 @@ func Feed(c *RequestContext) ResponseData {
 			handmade_post AS post
 		WHERE
 			post.category_kind = ANY ($1)
-			AND NOT deleted
+			AND deleted = FALSE
+			AND post.thread_id IS NOT NULL
 		`,
 		[]models.CategoryKind{models.CatKindForum, models.CatKindBlog, models.CatKindWiki, models.CatKindLibraryResource},
 	)
@@ -49,11 +50,11 @@ func Feed(c *RequestContext) ResponseData {
 		if pageParsed, err := strconv.Atoi(pageString); err == nil {
 			page = pageParsed
 		} else {
-			return c.Redirect("/feed", http.StatusSeeOther)
+			return c.Redirect(hmnurl.BuildFeed(), http.StatusSeeOther)
 		}
 	}
 	if page < 1 || numPages < page {
-		return c.Redirect("/feed", http.StatusSeeOther)
+		return c.Redirect(hmnurl.BuildFeedWithPage(utils.IntClamp(1, page, numPages)), http.StatusSeeOther)
 	}
 
 	howManyPostsToSkip := (page - 1) * postsPerPage
@@ -62,10 +63,10 @@ func Feed(c *RequestContext) ResponseData {
 		Current: page,
 		Total:   numPages,
 
-		FirstUrl:    hmnurl.Url("/feed", nil),
+		FirstUrl:    hmnurl.BuildFeed(),
-		LastUrl:     hmnurl.Url(fmt.Sprintf("/feed/%d", numPages), nil),
+		LastUrl:     hmnurl.BuildFeedWithPage(numPages),
-		NextUrl:     hmnurl.Url(fmt.Sprintf("/feed/%d", page+1), nil),
+		NextUrl:     hmnurl.BuildFeedWithPage(utils.IntClamp(1, page+1, numPages)),
-		PreviousUrl: hmnurl.Url(fmt.Sprintf("/feed/%d", page-1), nil),
+		PreviousUrl: hmnurl.BuildFeedWithPage(utils.IntClamp(1, page-1, numPages)),
 	}
 
 	var currentUserId *int
@@ -117,8 +118,28 @@ func Feed(c *RequestContext) ResponseData {
 		return ErrorResponse(http.StatusInternalServerError, oops.New(err, "failed to fetch feed posts"))
 	}
 
-	categoryUrls := GetAllCategoryUrls(c.Context(), c.Conn)
+	c.Perf.StartBlock("SQL", "Fetch category tree")
+	categoryTree := models.GetFullCategoryTree(c.Context(), c.Conn)
+	lineageBuilder := models.MakeCategoryLineageBuilder(categoryTree)
+	c.Perf.EndBlock()
 
+	categoryUrlCache := make(map[int]string)
+	getCategoryUrl := func(subdomain string, cat *models.Category) string {
+		_, ok := categoryUrlCache[cat.ID]
+		if !ok {
+			lineageNames := lineageBuilder.GetLineageSlugs(cat.ID)
+			switch cat.Kind {
+			case models.CatKindForum:
+				categoryUrlCache[cat.ID] = hmnurl.BuildForumCategory(subdomain, lineageNames[1:], 1)
+				// TODO(asaf): Add more kinds!!!
+			default:
+				categoryUrlCache[cat.ID] = ""
+			}
+		}
+		return categoryUrlCache[cat.ID]
+	}
+
+	c.Perf.StartBlock("FEED", "Build post items")
 	var postItems []templates.PostListItem
 	for _, iPostResult := range posts.ToSlice() {
 		postResult := iPostResult.(*feedPostQuery)
@@ -130,17 +151,19 @@ func Feed(c *RequestContext) ResponseData {
 			hasRead = true
 		}
 
-		parents := postResult.Cat.GetHierarchy(c.Context(), c.Conn)
+		breadcrumbs := make([]templates.Breadcrumb, 0, len(lineageBuilder.GetLineage(postResult.Cat.ID)))
-
-		var breadcrumbs []templates.Breadcrumb
 		breadcrumbs = append(breadcrumbs, templates.Breadcrumb{
 			Name: *postResult.Proj.Name,
 			Url:  hmnurl.ProjectUrl("/", nil, postResult.Proj.Subdomain()),
 		})
-		for _, parent := range parents {
+		if postResult.Post.CategoryKind == models.CatKindLibraryResource {
-			name := *parent.Name
+			// TODO(asaf): Fetch library root topic for the project and construct breadcrumb for it
-			if parent.ParentID == nil {
+		} else {
-				switch parent.Kind {
+			lineage := lineageBuilder.GetLineage(postResult.Cat.ID)
+			for i, cat := range lineage {
+				name := *cat.Name
+				if i == 0 {
+					switch cat.Kind {
 					case models.CatKindForum:
 						name = "Forums"
 					case models.CatKindBlog:
@@ -149,13 +172,14 @@ func Feed(c *RequestContext) ResponseData {
 				}
 				breadcrumbs = append(breadcrumbs, templates.Breadcrumb{
 					Name: name,
-				Url:  categoryUrls[parent.ID],
+					Url:  getCategoryUrl(postResult.Proj.Subdomain(), cat),
 				})
 			}
+		}
 
 		postItems = append(postItems, templates.PostListItem{
 			Title:       postResult.Thread.Title,
-			Url:         PostUrl(postResult.Post, postResult.Post.CategoryKind, categoryUrls[postResult.Post.CategoryID]),
+			Url:         hmnurl.BuildForumPost(postResult.Proj.Subdomain(), lineageBuilder.GetLineageSlugs(postResult.Cat.ID)[1:], postResult.Post.ID, postResult.Post.ThreadID),
 			User:        templates.UserToTemplate(&postResult.User),
 			Date:        postResult.Post.PostDate,
 			Breadcrumbs: breadcrumbs,
@@ -164,6 +188,7 @@ func Feed(c *RequestContext) ResponseData {
 			Content:     postResult.Post.Preview,
 		})
 	}
+	c.Perf.EndBlock()
 
 	baseData := getBaseData(c)
 	baseData.BodyClasses = append(baseData.BodyClasses, "feed")

src/website/requesthandling.go

@@ -46,29 +46,29 @@ func WrapStdHandler(h http.Handler) Handler {
 
 type Middleware func(h Handler) Handler
 
-func (rb *RouteBuilder) Handle(method string, regexStr string, h Handler) {
+func (rb *RouteBuilder) Handle(method string, regex *regexp.Regexp, h Handler) {
 	h = rb.Middleware(h)
 	rb.Router.Routes = append(rb.Router.Routes, Route{
 		Method:  method,
-		Regex:   regexp.MustCompile(regexStr),
+		Regex:   regex,
 		Handler: h,
 	})
 }
 
-func (rb *RouteBuilder) AnyMethod(regexStr string, h Handler) {
+func (rb *RouteBuilder) AnyMethod(regex *regexp.Regexp, h Handler) {
-	rb.Handle("", regexStr, h)
+	rb.Handle("", regex, h)
 }
 
-func (rb *RouteBuilder) GET(regexStr string, h Handler) {
+func (rb *RouteBuilder) GET(regex *regexp.Regexp, h Handler) {
-	rb.Handle(http.MethodGet, regexStr, h)
+	rb.Handle(http.MethodGet, regex, h)
 }
 
-func (rb *RouteBuilder) POST(regexStr string, h Handler) {
+func (rb *RouteBuilder) POST(regex *regexp.Regexp, h Handler) {
-	rb.Handle(http.MethodPost, regexStr, h)
+	rb.Handle(http.MethodPost, regex, h)
 }
 
-func (rb *RouteBuilder) StdHandler(regexStr string, h http.Handler) {
+func (rb *RouteBuilder) StdHandler(regex *regexp.Regexp, h http.Handler) {
-	rb.Handle("", regexStr, WrapStdHandler(h))
+	rb.Handle("", regex, WrapStdHandler(h))
 }
 
 func (r *Router) ServeHTTP(rw http.ResponseWriter, req *http.Request) {

src/website/routes.go

@@ -31,9 +31,10 @@ func NewWebsiteRoutes(conn *pgxpool.Pool, perfCollector *perf.PerfCollector) htt
 				logPerf := TrackRequestPerf(c, perfCollector)
 				defer logPerf()
 
-				defer LogContextErrors(c, res)
+				res = h(c)
 
-				return h(c)
+				LogContextErrors(c, res)
+				return
 			}
 		},
 	}
@@ -46,14 +47,15 @@ func NewWebsiteRoutes(conn *pgxpool.Pool, perfCollector *perf.PerfCollector) htt
 			logPerf := TrackRequestPerf(c, perfCollector)
 			defer logPerf()
 
-			defer LogContextErrors(c, res)
-
 			ok, errRes := LoadCommonWebsiteData(c)
 			if !ok {
 				return errRes
 			}
 
-			return h(c)
+			res = h(c)
+
+			LogContextErrors(c, res)
+			return
 		}
 	}
 
@@ -65,29 +67,31 @@ func NewWebsiteRoutes(conn *pgxpool.Pool, perfCollector *perf.PerfCollector) htt
 			logPerf := TrackRequestPerf(c, perfCollector)
 			defer logPerf()
 
-			defer LogContextErrors(c, res)
-
 			ok, errRes := LoadCommonWebsiteData(c)
 			if !ok {
 				return errRes
 			}
 
 			if !c.CurrentProject.IsHMN() {
-				res := c.Redirect(hmnurl.Url(c.URL().String(), nil), http.StatusMovedPermanently)
+				res = c.Redirect(hmnurl.Url(c.URL().String(), nil), http.StatusMovedPermanently)
-				return res
+				return
 			}
 
-			return h(c)
+			res = h(c)
+
+			LogContextErrors(c, res)
+			return
 		}
 	}
 
-	routes.POST("^/login$", Login)
+	// TODO(asaf): login/logout shouldn't happen on subdomains. We should verify that in the middleware.
-	routes.GET("^/logout$", Logout)
+	routes.POST(hmnurl.RegexLogin, Login)
-	routes.StdHandler("^/public/.*$",
+	routes.GET(hmnurl.RegexLogout, Logout)
+	routes.StdHandler(hmnurl.RegexPublic,
 		http.StripPrefix("/public/", http.FileServer(http.Dir("public"))),
 	)
 
-	mainRoutes.GET("^/$", func(c *RequestContext) ResponseData {
+	mainRoutes.GET(hmnurl.RegexHomepage, func(c *RequestContext) ResponseData {
 		if c.CurrentProject.IsHMN() {
 			return Index(c)
 		} else {
@@ -95,24 +99,24 @@ func NewWebsiteRoutes(conn *pgxpool.Pool, perfCollector *perf.PerfCollector) htt
 			panic("route not implemented")
 		}
 	})
-	staticPages.GET("^/manifesto$", Manifesto)
+	staticPages.GET(hmnurl.RegexManifesto, Manifesto)
-	staticPages.GET("^/about$", About)
+	staticPages.GET(hmnurl.RegexAbout, About)
-	staticPages.GET("^/code-of-conduct$", CodeOfConduct)
+	staticPages.GET(hmnurl.RegexCodeOfConduct, CodeOfConduct)
-	staticPages.GET("^/communication-guidelines$", CommunicationGuidelines)
+	staticPages.GET(hmnurl.RegexCommunicationGuidelines, CommunicationGuidelines)
-	staticPages.GET("^/contact$", ContactPage)
+	staticPages.GET(hmnurl.RegexContactPage, ContactPage)
-	staticPages.GET("^/monthly-update-policy$", MonthlyUpdatePolicy)
+	staticPages.GET(hmnurl.RegexMonthlyUpdatePolicy, MonthlyUpdatePolicy)
-	staticPages.GET("^/project-guidelines$", ProjectSubmissionGuidelines)
+	staticPages.GET(hmnurl.RegexProjectSubmissionGuidelines, ProjectSubmissionGuidelines)
 
-	mainRoutes.GET(`^/feed(/(?P<page>.+)?)?$`, Feed)
+	mainRoutes.GET(hmnurl.RegexFeed, Feed)
 
 	// TODO(asaf): Trailing slashes break these
-	mainRoutes.GET(`^/(?P<cats>forums(/[^\d]+?)*)/t/(?P<threadid>\d+)(/(?P<page>\d+))?$`, ForumThread)
+	mainRoutes.GET(hmnurl.RegexForumThread, ForumThread)
 	// mainRoutes.GET(`^/(?P<cats>forums(/cat)*)/t/(?P<threadid>\d+)/p/(?P<postid>\d+)$`, ForumPost)
-	mainRoutes.GET(`^/(?P<cats>forums(/[^\d]+?)*)(/(?P<page>\d+))?$`, ForumCategory)
+	mainRoutes.GET(hmnurl.RegexForumCategory, ForumCategory)
 
-	mainRoutes.GET("^/assets/project.css$", ProjectCSS)
+	mainRoutes.GET(hmnurl.RegexProjectCSS, ProjectCSS)
 
-	mainRoutes.AnyMethod("", FourOhFour)
+	mainRoutes.AnyMethod(hmnurl.RegexCatchAll, FourOhFour)
 
 	return router
 }

src/website/urls.go

@@ -23,7 +23,9 @@ func GetAllCategoryUrls(ctx context.Context, conn *pgxpool.Pool) map[int]string
 		FROM
 			handmade_category AS cat
 			JOIN handmade_project AS project ON project.id = cat.project_id
-		`,
+		WHERE
+			cat.kind != 6
+		`, // TODO(asaf): Clean up the db and remove the cat.kind != 6 check
 	)
 	if err != nil {
 		panic(err)
@@ -42,7 +44,8 @@ func GetProjectCategoryUrls(ctx context.Context, conn *pgxpool.Pool, projectId .
 			JOIN handmade_project AS project ON project.id = cat.project_id
 		WHERE
 			project.id = ANY ($1)
-		`,
+			AND cat.kind != 6
+		`, // TODO(asaf): Clean up the db and remove the cat.kind != 6 check
 		projectId,
 	)
 	if err != nil {
@@ -91,24 +94,16 @@ func makeCategoryUrls(rows []interface{}) map[int]string {
 }
 
 func CategoryUrl(subdomain string, cats ...*models.Category) string {
-	path := ""
+	catNames := make([]string, 0, len(cats))
-	for i, cat := range cats {
+	for _, cat := range cats {
-		if i == 0 {
+		catNames = append(catNames, *cat.Name)
-			switch cat.Kind {
+	}
-			case models.CatKindBlog:
+	switch cats[0].Kind {
-				path += "/blogs"
 	case models.CatKindForum:
-				path += "/forums"
+		return hmnurl.BuildForumCategory(subdomain, catNames[1:], 1)
-			// TODO: All cat types?
 	default:
 		return ""
 	}
-		} else {
-			path += "/" + *cat.Slug
-		}
-	}
-
-	return hmnurl.ProjectUrl(path, nil, subdomain)
 }
 
 func PostUrl(post models.Post, catKind models.CategoryKind, categoryUrl string) string {