Add a package index

2 files changed, 86 insertions, 11 deletions

diff --git a/roseh.moe.go b/roseh.moe.go
index cef9657..407d112 100644
--- a/roseh.moe.go
+++ b/roseh.moe.go
@@ -26,6 +26,7 @@ import (
 	"net/http/httputil"
 	"net/url"
 	"os"
+	"slices"
 	"strconv"
 	"strings"
 	"sync"
@@ -86,9 +87,20 @@ func loadSecrets() error {
 	return nil
 }
 
+type packageConfig struct {
+	url         string
+	description string
+}
+
+type commandConfig struct {
+	url         string
+	description string
+	multi       bool
+}
+
 type serviceConfiguration struct {
-	packageRedirects map[string]string
-	commandRedirects map[string]string
+	packageRedirects map[string]packageConfig
+	commandRedirects map[string]commandConfig
 }
 
 var (
@@ -117,26 +129,36 @@ func loadConfig() (*serviceConfiguration, error) {
 	}
 	var fileConfig struct {
 		Package []struct {
-			Name string `xml:",attr"`
-			URL  string `xml:",attr"`
+			Name        string `xml:",attr"`
+			URL         string `xml:",attr"`
+			Description string `xml:",attr"`
 		} `xml:"Redirects>Package"`
 		Command []struct {
-			Name string `xml:",attr"`
-			URL  string `xml:",attr"`
+			Name        string `xml:",attr"`
+			URL         string `xml:",attr"`
+			Description string `xml:",attr"`
+			Multi       bool   `xml:",attr"`
 		} `xml:"Redirects>Command"`
 	}
 	if err := xml.Unmarshal(fileBytes, &fileConfig); err != nil {
 		return nil, err
 	}
 	config := &serviceConfiguration{
-		packageRedirects: make(map[string]string),
-		commandRedirects: make(map[string]string),
+		packageRedirects: make(map[string]packageConfig),
+		commandRedirects: make(map[string]commandConfig),
 	}
 	for _, pkg := range fileConfig.Package {
-		config.packageRedirects[pkg.Name] = pkg.URL
+		config.packageRedirects[pkg.Name] = packageConfig{
+			url:         pkg.URL,
+			description: pkg.Description,
+		}
 	}
 	for _, cmd := range fileConfig.Command {
-		config.commandRedirects[cmd.Name] = cmd.URL
+		config.commandRedirects[cmd.Name] = commandConfig{
+			url:         cmd.URL,
+			description: cmd.Description,
+			multi:       cmd.Multi,
+		}
 	}
 	serviceConfigMu.Lock()
 	serviceConfig = config
@@ -808,10 +830,50 @@ func cmd(w http.ResponseWriter, r *http.Request) {
 	}
 }
 
+var (
+	//go:embed templates/pkg-index.html.template
+	pkgIndexString   string
+	pkgIndexTemplate = template.Must(outlinedTemplate(pkgIndexString))
+)
+
+type pkgIndexTemplatePackage struct {
+	Name        string
+	Description string
+}
+
+type pkgIndexTemplateArgs struct {
+	Packages []pkgIndexTemplatePackage
+}
+
+func pkgIndex(w http.ResponseWriter, r *http.Request) {
+	serviceConfig, err := loadConfig()
+	if err != nil {
+		log.Printf("Warning: failed to load config: %s", err)
+		http.Error(w, "Failed to load config", http.StatusInternalServerError)
+		return
+	}
+	packages := make([]string, 0, len(serviceConfig.packageRedirects))
+	for pkg := range serviceConfig.packageRedirects {
+		packages = append(packages, pkg)
+	}
+	slices.Sort(packages)
+	templatePackages := make([]pkgIndexTemplatePackage, len(packages))
+	for i, pkg := range packages {
+		templatePackages[i] = pkgIndexTemplatePackage{
+			Name:        pkg,
+			Description: serviceConfig.packageRedirects[pkg].description,
+		}
+	}
+	if err := pkgIndexTemplate.Execute(w, pkgIndexTemplateArgs{Packages: templatePackages}); err != nil {
+		log.Printf("Warning: pkgIndex: %s", err)
+	}
+}
+
 func pkg(w http.ResponseWriter, r *http.Request) {
 	serviceConfig, err := loadConfig()
 	if err != nil {
-		http.Error(w, fmt.Sprintf("load config: %s", err), http.StatusInternalServerError)
+		log.Printf("Warning: failed to load config: %s", err)
+		http.Error(w, "Failed to load config", http.StatusInternalServerError)
 		return
 	}
 	source, ok := serviceConfig.packageRedirects[r.PathValue("pkg")]
@@ -865,6 +927,7 @@ func main() {
 	mux.HandleFunc("GET /notepad", notepad)
 	mux.HandleFunc("POST /notepad", autosave)
 	mux.HandleFunc("GET /cmd/{cmd}", cmd)
+	mux.HandleFunc("GET /pkg", pkgIndex)
 	mux.HandleFunc("GET /pkg/{pkg}", pkg)
 	mux.Handle("GET /code/", http.StripPrefix("/code/", http.FileServer(http.Dir(*codeDir))))
 	mux.HandleFunc("GET /static/", static)
diff --git a/templates/pkg-index.html.template b/templates/pkg-index.html.template
new file mode 100644
index 0000000..7628b86
--- /dev/null
+++ b/templates/pkg-index.html.template
@@ -0,0 +1,12 @@
+{{define "head"}}
+	<title>Packages</title>
+{{end}}
+
+<section>
+	<p>Package index</p>
+	<ul>
+		{{range .Packages}}
+			<li><p><a href="https://pkg.go.dev/roseh.moe/pkg/{{.Name}}">{{.Name}}</a> - {{.Description}}</p></li>
+		{{end}}
+	</ul>
+</section>