add attachement support

.gitignore

@@ -1,3 +1,4 @@
 NOTES
 credentials.json
 *.sql
+public/attachments/

public/index.css

@@ -40,3 +40,11 @@ div.justify {
 td, th {
   vertical-align:top;
 }
+.hscroll {
+  width: 100%;
+  overflow-x: auto;
+  white-space: nowrap;
+}
+img {
+  height: 200px;
+}

public/index.html

@@ -40,6 +40,7 @@
             <thead><tr><th>property</th><th>value(s)</th></tr></thead>
             <tbody id="properties"></tbody>
           </table>
+          <div class="hscroll" id="attachments"></div>
           <button type="button" onclick="delete_part()">delete part (including children)</button>
         </div>
       </td>

public/partdb.js

@@ -165,6 +165,19 @@ function select()
 				td.appendChild(input);
 				tr.appendChild(td);
 				properties.appendChild(tr);
+				// add attachments
+				const attachments = document.getElementById('attachments');
+				attachments.innerHTML = null;
+				for (const attachment of part["attachments"]) {
+					const a = document.createElement('a');
+					a.href = attachment;
+					const img = document.createElement('img');
+					img.alt = attachment.split("/").slice(-1);
+					img.src = attachment;
+					a.appendChild(img);
+					attachments.appendChild(a);
+					console.log(attachments);
+				}
 			}
 		}
 	}

schema.sql

@@ -65,18 +65,6 @@ CREATE TABLE IF NOT EXISTS distribution (
 	FOREIGN KEY (distributor) REFERENCES distributor (id)
 );
 
--- part attachments
-CREATE TABLE IF NOT EXISTS attachment (
-	id INTEGER AUTO_INCREMENT PRIMARY KEY, -- index
-	part INTEGER NOT NULL, -- the part
-	mime TEXT NOT NULL, -- attachment document type
-	path TEXT NOT NULL, -- the path to the attachment
-	priority INTEGER NOT NULL, -- in which place the attachment should be displayed
-	FOREIGN KEY (part) REFERENCES part (id),
-	FOREIGN KEY (type) REFERENCES document (id),
-	UNIQUE (part, priority)
-);
-
 -- part property
 CREATE TABLE IF NOT EXISTS property (
 	id INTEGER AUTO_INCREMENT PRIMARY KEY, -- index

server.rb

@@ -13,9 +13,17 @@ require 'mysql2'
 require 'json'
 require 'sinatra'
 
+# allow dumping crashes in browser
 DEBUG = true
+# maximum number of parts returned
 PARTS_LIMIT = 100
+# credentials for database
 CREDENTIALS = "credentials.json"
+# folder name for served pages
+PUBLIC = "public"
+# folder name for part attachments (in PUBLIC)
+ATTACHMENTS = "attachments"
+
 raise "database information #{CREDENTIALS} do not exist" unless File.file? CREDENTIALS
 
 # open server
@@ -109,6 +117,17 @@ def get_part_by_id(id)
       part["properties"][k] ||= v
     end
   end
+  # add attachments
+  part["attachments"] = []
+  dir = PUBLIC + "/" + ATTACHMENTS + "/" + part["name"]
+  Dir.entries(dir).each do |file|
+    path = dir + "/" + file
+    next unless File.file? path
+    part["attachments"] << ATTACHMENTS + "/" + part["name"] + "/" + file
+  end
+  if parent then
+    part["attachments"] += parent["attachments"]
+  end
   # clean up
   delete = ["parent"]
   delete.each do |k|