From 6a4c384eb649f1c5b02114dac8d5ba497c2307d1 Mon Sep 17 00:00:00 2001
From: Amir Raminfar <findamir@gmail.com>
Date: Wed, 27 Dec 2023 20:41:58 -0800
Subject: [PATCH] Revert "feat!: removes custom content help support"

This reverts commit 904b2a4f89132694357c75e9b9b28e7ecd1d3fba.
---
 assets/components/Links.vue   | 12 +++++++
 assets/pages/content/[id].vue | 18 ++++++++++
 assets/stores/config.ts       |  1 +
 internal/content/disk.go      | 67 +++++++++++++++++++++++++++++++++++
 internal/web/content.go       | 25 +++++++++++++
 internal/web/events.go        |  3 ++
 internal/web/index.go         | 11 ++++++
 internal/web/routes.go        |  1 +
 8 files changed, 138 insertions(+)
 create mode 100644 assets/pages/content/[id].vue
 create mode 100644 internal/content/disk.go
 create mode 100644 internal/web/content.go

diff --git a/assets/components/Links.vue b/assets/components/Links.vue
index f5f1e536..dabd14b1 100644
--- a/assets/components/Links.vue
+++ b/assets/components/Links.vue
@@ -1,5 +1,17 @@
 <template>
   <div class="flex items-center justify-end gap-4">
+    <template v-if="config.pages">
+      <router-link
+        :to="{ name: 'content-id', params: { id: page.id } }"
+        :title="page.title"
+        v-for="page in config.pages"
+        :key="page.id"
+        class="link-primary"
+      >
+        {{ page.title }}
+      </router-link>
+    </template>
+
     <dropdown class="dropdown-end" @closed="latestTag = latest?.tag ?? config.version">
       <template #trigger>
         <mdi:announcement class="size-6 -rotate-12" />
diff --git a/assets/pages/content/[id].vue b/assets/pages/content/[id].vue
new file mode 100644
index 00000000..f68225d1
--- /dev/null
+++ b/assets/pages/content/[id].vue
@@ -0,0 +1,18 @@
+<template>
+  <page-with-links>
+    <section>
+      <article class="prose" v-html="data.content" v-if="data"></article>
+    </section>
+  </page-with-links>
+</template>
+
+<script lang="ts" setup>
+const { id } = defineProps<{ id: string }>();
+
+const { data } = useFetch(() => withBase("/api/content/" + id), {
+  refetch: true,
+})
+  .get()
+  .json<{ title: string; content: string }>();
+</script>
+<style lang="postcss" scoped></style>
diff --git a/assets/stores/config.ts b/assets/stores/config.ts
index 06436ccc..b67299c4 100644
--- a/assets/stores/config.ts
+++ b/assets/stores/config.ts
@@ -18,6 +18,7 @@ export interface Config {
     name: string;
   };
   profile?: Profile;
+  pages?: { id: string; title: string }[];
 }
 
 export interface Profile {
diff --git a/internal/content/disk.go b/internal/content/disk.go
new file mode 100644
index 00000000..f6232b4e
--- /dev/null
+++ b/internal/content/disk.go
@@ -0,0 +1,67 @@
+package content
+
+import (
+	"bytes"
+	"fmt"
+	"os"
+	"path/filepath"
+
+	"github.com/yuin/goldmark"
+	meta "github.com/yuin/goldmark-meta"
+	"github.com/yuin/goldmark/extension"
+	"github.com/yuin/goldmark/parser"
+)
+
+type Page struct {
+	Id      string `json:"id"`
+	Title   string `json:"title"`
+	Content string `json:"content,omitempty"`
+}
+
+func ReadAll() ([]Page, error) {
+	var pages []Page
+	files, err := filepath.Glob("data/content/*.md")
+	if err != nil {
+		return nil, fmt.Errorf("error reading /data/content/*.md: %w", err)
+	}
+
+	for _, file := range files {
+		id := filepath.Base(file)
+		id = id[0 : len(id)-3]
+		page, err := Read(id)
+		if err != nil {
+			return nil, fmt.Errorf("error reading %s: %w", id, err)
+		}
+		pages = append(pages, page)
+	}
+
+	return pages, nil
+}
+
+func Read(id string) (Page, error) {
+	data, err := os.ReadFile("data/content/" + id + ".md")
+	if err != nil {
+		return Page{}, fmt.Errorf("error reading /data/content/%s.md: %w", id, err)
+	}
+
+	markdown := goldmark.New(
+		goldmark.WithExtensions(extension.GFM, meta.New()),
+	)
+	context := parser.NewContext()
+	var buf bytes.Buffer
+	if err := markdown.Convert(data, &buf, parser.WithContext(context)); err != nil {
+		return Page{}, fmt.Errorf("error converting markdown: %w", err)
+	}
+
+	metaData := meta.Get(context)
+	page := Page{
+		Content: buf.String(),
+		Id:      id,
+		Title:   id,
+	}
+	if title, ok := metaData["title"]; ok {
+		page.Title = title.(string)
+	}
+
+	return page, nil
+}
diff --git a/internal/web/content.go b/internal/web/content.go
new file mode 100644
index 00000000..1e906821
--- /dev/null
+++ b/internal/web/content.go
@@ -0,0 +1,25 @@
+package web
+
+import (
+	"encoding/json"
+	"net/http"
+
+	"github.com/amir20/dozzle/internal/content"
+	"github.com/go-chi/chi/v5"
+	log "github.com/sirupsen/logrus"
+)
+
+func (h *handler) staticContent(w http.ResponseWriter, r *http.Request) {
+	id := chi.URLParam(r, "id")
+	content, err := content.Read(id)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		log.Warnf("error reading content: %v", err)
+		return
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	if err := json.NewEncoder(w).Encode(content); err != nil {
+		log.Errorf("json encoding error while streaming %v", err.Error())
+	}
+}
diff --git a/internal/web/events.go b/internal/web/events.go
index 30569a46..0d0a8ac3 100644
--- a/internal/web/events.go
+++ b/internal/web/events.go
@@ -9,6 +9,7 @@ import (
 	"sync"
 
 	"github.com/amir20/dozzle/internal/analytics"
+	"github.com/amir20/dozzle/internal/content"
 	"github.com/amir20/dozzle/internal/docker"
 
 	log "github.com/sirupsen/logrus"
@@ -32,6 +33,7 @@ func (h *handler) streamEvents(w http.ResponseWriter, r *http.Request) {
 	events := make(chan docker.ContainerEvent)
 	stats := make(chan docker.ContainerStat)
 
+	pages, _ := content.ReadAll()
 	b := analytics.BeaconEvent{
 		Name:             "events",
 		Version:          h.config.Version,
@@ -41,6 +43,7 @@ func (h *handler) streamEvents(w http.ResponseWriter, r *http.Request) {
 		HasCustomBase:    h.config.Base != "/",
 		HasCustomAddress: h.config.Addr != ":8080",
 		Clients:          len(h.clients),
+		HasDocumentation: len(pages) > 0,
 		HasActions:       h.config.EnableActions,
 	}
 
diff --git a/internal/web/index.go b/internal/web/index.go
index 5162b634..14696ac0 100644
--- a/internal/web/index.go
+++ b/internal/web/index.go
@@ -10,6 +10,7 @@ import (
 	"path"
 
 	"github.com/amir20/dozzle/internal/auth"
+	"github.com/amir20/dozzle/internal/content"
 	"github.com/amir20/dozzle/internal/docker"
 	"github.com/amir20/dozzle/internal/profile"
 
@@ -53,6 +54,16 @@ func (h *handler) executeTemplate(w http.ResponseWriter, req *http.Request) {
 		"enableActions":       h.config.EnableActions,
 	}
 
+	pages, err := content.ReadAll()
+	if err != nil {
+		log.Errorf("error reading content: %v", err)
+	} else if len(pages) > 0 {
+		for i, _ := range pages {
+			pages[i].Content = ""
+		}
+		config["pages"] = pages
+	}
+
 	user := auth.UserFromContext(req.Context())
 	if user != nil {
 		if profile, err := profile.Load(*user); err == nil {
diff --git a/internal/web/routes.go b/internal/web/routes.go
index d2a41bad..305b20b3 100644
--- a/internal/web/routes.go
+++ b/internal/web/routes.go
@@ -112,6 +112,7 @@ func createRouter(h *handler) *chi.Mux {
 				r.Get("/api/releases", h.releases)
 				r.Get("/api/profile/avatar", h.avatar)
 				r.Patch("/api/profile", h.updateProfile)
+				r.Get("/api/content/{id}", h.staticContent)
 				r.Get("/logout", h.clearSession) // TODO remove this
 				r.Get("/version", h.version)
 			})