From 2b505cd4e803c0f5f7a48b298b697c3f2ba10423 Mon Sep 17 00:00:00 2001
From: f <f@kefir.red>
Date: Mon, 2 Jul 2018 19:07:06 -0300
Subject: [PATCH] subir imagenes

---
 app/controllers/sites_controller.rb        | 19 +++++++++++++++++++
 app/models/post.rb                         | 20 ++++++++++++++++++--
 app/models/site.rb                         |  6 ++++++
 app/views/posts/show.haml                  |  7 ++++++-
 app/views/posts/template_field/_image.haml |  2 ++
 config/routes.rb                           |  2 ++
 6 files changed, 53 insertions(+), 3 deletions(-)

diff --git a/app/controllers/sites_controller.rb b/app/controllers/sites_controller.rb
index ab85343a..55e56432 100644
--- a/app/controllers/sites_controller.rb
+++ b/app/controllers/sites_controller.rb
@@ -15,6 +15,25 @@ class SitesController < ApplicationController
     redirect_to site_posts_path(site)
   end
 
+  # Envía un archivo del directorio público de Jekyll
+  def send_public_file
+    @site = find_site
+    file  = [params[:basename], params[:format]].join('.')
+    path  = Pathname.new(File.join(@site.path, 'public', params[:type], file))
+
+    # TODO Verificar que no nos estén sacando archivos del sistema, como
+    # /etc/passwd
+    #
+    # En sí el matcher de la ruta no admite .. así que estaríamos semi
+    # cubiertas.
+
+    if path.exist?
+      send_file path, 'x-sendfile': true
+    else
+      render status: 404
+    end
+  end
+
   def enqueue
     @site = find_site
     @site.enqueue!
diff --git a/app/models/post.rb b/app/models/post.rb
index 02c1e386..bb82e551 100644
--- a/app/models/post.rb
+++ b/app/models/post.rb
@@ -201,6 +201,7 @@ class Post
       t = template_fields.find { |t| t.key == k }
       if t
         # Subir la imagen!
+        # TODO pasar a su propio método
         if t.image?
           begin
             i = Post::ImageUploader.new(site)
@@ -251,9 +252,24 @@ class Post
     @post <=> other.post
   end
 
-  # Obtiene metadatos asegurándose que siempre trabajamos con strings
+  # Detecta si un valor es un archivo
+  def url?(name)
+    path = get_front_matter(name)
+    return false unless path.is_a? String
+    # El primer valor es '' porque la URL empieza con /
+    path.split('/').second == 'public'
+  end
+
+  def image?(name)
+    return false unless url? name
+
+    # TODO no chequear por la extensión
+    %[gif jpg jpeg png].include? get_front_matter(name).gsub(/.*\./, '')
+  end
+
+  # Obtiene metadatos de forma recursiva
   def get_front_matter(name)
-    @front_matter.dig(name.to_s)
+    @front_matter.dig(*name)
   end
 
   # Como get_front_matter pero con un valor por defecto
diff --git a/app/models/site.rb b/app/models/site.rb
index a3c3d8c4..8e16ebc2 100644
--- a/app/models/site.rb
+++ b/app/models/site.rb
@@ -274,6 +274,12 @@ class Site
   end
   alias :reorder_posts! :reorder_collection!
 
+  # Obtener una ruta disponible para Sutty
+  def get_url_for_sutty(path)
+    # Remover los puntos para que no nos envíen a ../../
+    File.join('/', 'sites', id, path.gsub('..', ''))
+  end
+
   # El directorio donde se almacenan los sitios
   def self.site_path
     File.join(Rails.root, '_sites')
diff --git a/app/views/posts/show.haml b/app/views/posts/show.haml
index 70d1321a..32f3951f 100644
--- a/app/views/posts/show.haml
+++ b/app/views/posts/show.haml
@@ -80,4 +80,9 @@
                 = data.strftime('%F')
               - else
                 -# Texto
-                = data
+                - if @post.image? key
+                  %img.img-fluid{src: @site.get_url_for_sutty(data)}
+                - elsif @post.url? key
+                  %a{href: @site.get_url_for_sutty(data)}= data
+                - else
+                  = data
diff --git a/app/views/posts/template_field/_image.haml b/app/views/posts/template_field/_image.haml
index 2aa6c643..534adc75 100644
--- a/app/views/posts/template_field/_image.haml
+++ b/app/views/posts/template_field/_image.haml
@@ -1,3 +1,5 @@
+- if @post.url? name
+  %img.img-fluid{src: @site.get_url_for_sutty(@post.get_front_matter(name))}
 = file_field_tag field_name_for_post_as_string(name),
   class: 'form-control',
   required: template.required?
diff --git a/config/routes.rb b/config/routes.rb
index 1924dd7f..126f5849 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -7,6 +7,8 @@ Rails.application.routes.draw do
 
   get 'markdown', to: 'application#markdown'
 
+  get '/sites/:site_id/public/:type/:basename', to: 'sites#send_public_file'
+
   resources :sites, only: [ :index, :show ] do
     resources :posts
     resources :templates