365 lines
11 KiB
Go
365 lines
11 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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"strings"
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"time"
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"git.handmade.network/hmn/hmn/src/auth"
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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/logging"
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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/perf"
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"git.handmade.network/hmn/hmn/src/templates"
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"github.com/jackc/pgx/v4/pgxpool"
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"github.com/teacat/noire"
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)
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func NewWebsiteRoutes(conn *pgxpool.Pool, perfCollector *perf.PerfCollector) http.Handler {
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router := &Router{}
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routes := RouteBuilder{
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Router: router,
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Middleware: func(h Handler) Handler {
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return func(c *RequestContext) (res ResponseData) {
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c.Conn = conn
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logPerf := TrackRequestPerf(c, perfCollector)
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defer logPerf()
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defer LogContextErrors(c, &res)
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return h(c)
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}
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},
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}
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mainRoutes := routes
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mainRoutes.Middleware = func(h Handler) Handler {
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return func(c *RequestContext) (res ResponseData) {
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c.Conn = conn
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logPerf := TrackRequestPerf(c, perfCollector)
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defer logPerf()
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defer LogContextErrors(c, &res)
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ok, errRes := LoadCommonWebsiteData(c)
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if !ok {
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return errRes
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}
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return h(c)
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}
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}
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staticPages := routes
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staticPages.Middleware = func(h Handler) Handler {
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return func(c *RequestContext) (res ResponseData) {
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c.Conn = conn
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logPerf := TrackRequestPerf(c, perfCollector)
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defer logPerf()
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defer LogContextErrors(c, &res)
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ok, errRes := LoadCommonWebsiteData(c)
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if !ok {
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return errRes
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}
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if !c.CurrentProject.IsHMN() {
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return c.Redirect(hmnurl.Url(c.URL().Path, hmnurl.QFromURL(c.URL())), http.StatusMovedPermanently)
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}
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return h(c)
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}
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}
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// TODO(asaf): login/logout shouldn't happen on subdomains. We should verify that in the middleware.
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routes.POST(hmnurl.RegexLoginAction, Login)
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routes.GET(hmnurl.RegexLogoutAction, Logout)
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routes.StdHandler(hmnurl.RegexPublic,
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http.StripPrefix("/public/", http.FileServer(http.Dir("public"))),
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)
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mainRoutes.GET(hmnurl.RegexHomepage, func(c *RequestContext) ResponseData {
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if c.CurrentProject.IsHMN() {
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return Index(c)
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} else {
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// TODO: Return the project landing page
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panic("route not implemented")
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}
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})
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staticPages.GET(hmnurl.RegexManifesto, Manifesto)
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staticPages.GET(hmnurl.RegexAbout, About)
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staticPages.GET(hmnurl.RegexCodeOfConduct, CodeOfConduct)
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staticPages.GET(hmnurl.RegexCommunicationGuidelines, CommunicationGuidelines)
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staticPages.GET(hmnurl.RegexContactPage, ContactPage)
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staticPages.GET(hmnurl.RegexMonthlyUpdatePolicy, MonthlyUpdatePolicy)
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staticPages.GET(hmnurl.RegexProjectSubmissionGuidelines, ProjectSubmissionGuidelines)
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// TODO(asaf): Have separate middleware for HMN-only routes and any-project routes
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// NOTE(asaf): HMN-only routes:
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mainRoutes.GET(hmnurl.RegexFeed, Feed)
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mainRoutes.GET(hmnurl.RegexAtomFeed, AtomFeed)
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mainRoutes.GET(hmnurl.RegexShowcase, Showcase)
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mainRoutes.GET(hmnurl.RegexSnippet, Snippet)
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mainRoutes.GET(hmnurl.RegexProjectIndex, ProjectIndex)
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mainRoutes.GET(hmnurl.RegexUserProfile, UserProfile)
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// NOTE(asaf): Any-project routes:
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mainRoutes.GET(hmnurl.RegexForumThread, ForumThread)
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mainRoutes.GET(hmnurl.RegexForumCategory, ForumCategory)
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mainRoutes.GET(hmnurl.RegexForumPost, ForumPostRedirect)
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mainRoutes.GET(hmnurl.RegexProjectCSS, ProjectCSS)
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// Other
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mainRoutes.AnyMethod(hmnurl.RegexCatchAll, FourOhFour)
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return router
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}
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func getBaseData(c *RequestContext) templates.BaseData {
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var templateUser *templates.User
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if c.CurrentUser != nil {
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templateUser = &templates.User{
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Username: c.CurrentUser.Username,
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Name: c.CurrentUser.Name,
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Email: c.CurrentUser.Email,
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IsSuperuser: c.CurrentUser.IsSuperuser,
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IsStaff: c.CurrentUser.IsStaff,
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}
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}
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return templates.BaseData{
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Theme: c.Theme,
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CurrentUrl: c.FullUrl(),
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LoginPageUrl: hmnurl.BuildLoginPage(c.FullUrl()),
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ProjectCSSUrl: hmnurl.BuildProjectCSS(c.CurrentProject.Color1),
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Project: templates.ProjectToTemplate(c.CurrentProject, c.Theme),
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User: templateUser,
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IsProjectPage: !c.CurrentProject.IsHMN(),
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Header: templates.Header{
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AdminUrl: hmnurl.BuildHomepage(), // TODO(asaf)
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UserSettingsUrl: hmnurl.BuildHomepage(), // TODO(asaf)
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LoginActionUrl: hmnurl.BuildLoginAction(c.FullUrl()),
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LogoutActionUrl: hmnurl.BuildLogoutAction(c.FullUrl()),
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RegisterUrl: hmnurl.BuildHomepage(), // TODO(asaf)
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HMNHomepageUrl: hmnurl.BuildHomepage(),
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ProjectHomepageUrl: hmnurl.BuildProjectHomepage(c.CurrentProject.Slug),
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ProjectIndexUrl: hmnurl.BuildProjectIndex(1),
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BlogUrl: hmnurl.BuildBlog(c.CurrentProject.Slug, 1),
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ForumsUrl: hmnurl.BuildForumCategory(c.CurrentProject.Slug, nil, 1),
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WikiUrl: hmnurl.BuildWiki(c.CurrentProject.Slug),
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LibraryUrl: hmnurl.BuildLibrary(c.CurrentProject.Slug),
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ManifestoUrl: hmnurl.BuildManifesto(),
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EpisodeGuideUrl: hmnurl.BuildHomepage(), // TODO(asaf)
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EditUrl: hmnurl.BuildHomepage(), // TODO(asaf)
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SearchActionUrl: hmnurl.BuildHomepage(), // TODO(asaf)
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},
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Footer: templates.Footer{
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HomepageUrl: hmnurl.BuildHomepage(),
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AboutUrl: hmnurl.BuildAbout(),
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ManifestoUrl: hmnurl.BuildManifesto(),
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CodeOfConductUrl: hmnurl.BuildCodeOfConduct(),
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CommunicationGuidelinesUrl: hmnurl.BuildCommunicationGuidelines(),
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ProjectIndexUrl: hmnurl.BuildProjectIndex(1),
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ForumsUrl: hmnurl.BuildForumCategory(models.HMNProjectSlug, nil, 1),
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ContactUrl: hmnurl.BuildContactPage(),
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SitemapUrl: hmnurl.BuildSiteMap(),
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},
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}
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}
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func FetchProjectBySlug(ctx context.Context, conn *pgxpool.Pool, slug string) (*models.Project, error) {
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if len(slug) > 0 && slug != models.HMNProjectSlug {
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subdomainProjectRow, err := db.QueryOne(ctx, conn, models.Project{}, "SELECT $columns FROM handmade_project WHERE slug = $1", slug)
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if err == nil {
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subdomainProject := subdomainProjectRow.(*models.Project)
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return subdomainProject, nil
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} else if !errors.Is(err, db.ErrNoMatchingRows) {
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return nil, oops.New(err, "failed to get projects by slug")
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} else {
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return nil, nil
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}
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} else {
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defaultProjectRow, err := db.QueryOne(ctx, conn, models.Project{}, "SELECT $columns FROM handmade_project WHERE id = $1", models.HMNProjectID)
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if err != nil {
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if errors.Is(err, db.ErrNoMatchingRows) {
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return nil, oops.New(nil, "default project didn't exist in the database")
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} else {
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return nil, oops.New(err, "failed to get default project")
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}
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}
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defaultProject := defaultProjectRow.(*models.Project)
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return defaultProject, nil
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}
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}
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func ProjectCSS(c *RequestContext) ResponseData {
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color := c.URL().Query().Get("color")
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if color == "" {
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return ErrorResponse(http.StatusBadRequest, NewSafeError(nil, "You must provide a 'color' parameter.\n"))
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}
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baseData := getBaseData(c)
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bgColor := noire.NewHex(color)
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h, s, l := bgColor.HSL()
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if baseData.Theme == "dark" {
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l = 15
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} else {
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l = 95
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}
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if s > 20 {
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s = 20
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}
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bgColor = noire.NewHSL(h, s, l)
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templateData := struct {
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templates.BaseData
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Color string
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PostBgColor string
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}{
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BaseData: baseData,
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Color: color,
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PostBgColor: bgColor.HTML(),
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}
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var res ResponseData
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res.Header().Add("Content-Type", "text/css")
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err := res.WriteTemplate("project.css", templateData, c.Perf)
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if err != nil {
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return ErrorResponse(http.StatusInternalServerError, oops.New(err, "failed to generate project CSS"))
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}
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return res
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}
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func FourOhFour(c *RequestContext) ResponseData {
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var res ResponseData
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res.StatusCode = http.StatusNotFound
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if c.Req.Header["Accept"] != nil && strings.Contains(c.Req.Header["Accept"][0], "text/html") {
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templateData := struct {
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templates.BaseData
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Wanted string
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}{
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BaseData: getBaseData(c),
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Wanted: c.FullUrl(),
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}
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err := res.WriteTemplate("404.html", templateData, c.Perf)
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if err != nil {
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panic(err)
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}
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} else {
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res.Write([]byte("Not Found"))
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}
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return res
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}
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func LoadCommonWebsiteData(c *RequestContext) (bool, ResponseData) {
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c.Perf.StartBlock("MIDDLEWARE", "Load common website data")
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defer c.Perf.EndBlock()
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// get project
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{
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slug := ""
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hostParts := strings.SplitN(c.Req.Host, ".", 3)
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if len(hostParts) >= 3 {
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slug = hostParts[0]
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}
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dbProject, err := FetchProjectBySlug(c.Context(), c.Conn, slug)
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if err != nil {
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return false, ErrorResponse(http.StatusInternalServerError, oops.New(err, "failed to fetch current project"))
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}
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if dbProject == nil {
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return false, c.Redirect(hmnurl.BuildHomepage(), http.StatusSeeOther)
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}
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c.CurrentProject = dbProject
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}
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{
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sessionCookie, err := c.Req.Cookie(auth.SessionCookieName)
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if err == nil {
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user, err := getCurrentUser(c, sessionCookie.Value)
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if err != nil {
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return false, ErrorResponse(http.StatusInternalServerError, oops.New(err, "failed to get current user"))
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}
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c.CurrentUser = user
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}
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// http.ErrNoCookie is the only error Cookie ever returns, so no further handling to do here.
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}
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theme := "light"
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if c.CurrentUser != nil && c.CurrentUser.DarkTheme {
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theme = "dark"
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}
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c.Theme = theme
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return true, ResponseData{}
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}
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// Given a session id, fetches user data from the database. Will return nil if
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// the user cannot be found, and will only return an error if it's serious.
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func getCurrentUser(c *RequestContext, sessionId string) (*models.User, error) {
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session, err := auth.GetSession(c.Context(), c.Conn, sessionId)
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if err != nil {
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if errors.Is(err, auth.ErrNoSession) {
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return nil, nil
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} else {
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return nil, oops.New(err, "failed to get current session")
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}
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}
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userRow, err := db.QueryOne(c.Context(), c.Conn, models.User{}, "SELECT $columns FROM auth_user WHERE username = $1", session.Username)
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if err != nil {
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if errors.Is(err, db.ErrNoMatchingRows) {
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logging.Debug().Str("username", session.Username).Msg("returning no current user for this request because the user for the session couldn't be found")
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return nil, nil // user was deleted or something
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} else {
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return nil, oops.New(err, "failed to get user for session")
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}
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}
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user := userRow.(*models.User)
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return user, nil
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}
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func TrackRequestPerf(c *RequestContext, perfCollector *perf.PerfCollector) (after func()) {
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c.Perf = perf.MakeNewRequestPerf(c.Route, c.Req.URL.Path)
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return func() {
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c.Perf.EndRequest()
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log := logging.Info()
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blockStack := make([]time.Time, 0)
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for i, block := range c.Perf.Blocks {
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for len(blockStack) > 0 && block.End.After(blockStack[len(blockStack)-1]) {
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blockStack = blockStack[:len(blockStack)-1]
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}
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log.Str(fmt.Sprintf("[%4.d] At %9.2fms", i, c.Perf.MsFromStart(&block)), fmt.Sprintf("%*.s[%s] %s (%.4fms)", len(blockStack)*2, "", block.Category, block.Description, block.DurationMs()))
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blockStack = append(blockStack, block.End)
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}
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log.Msg(fmt.Sprintf("Served %s in %.4fms", c.Perf.Path, float64(c.Perf.End.Sub(c.Perf.Start).Nanoseconds())/1000/1000))
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perfCollector.SubmitRun(c.Perf)
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}
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}
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func LogContextErrors(c *RequestContext, res *ResponseData) {
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for _, err := range res.Errors {
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c.Logger.Error().Timestamp().Stack().Str("Requested", c.FullUrl()).Err(err).Msg("error occurred during request")
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}
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}
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