add update part capability

public/index.html

@@ -42,6 +42,7 @@
           </table>
           <div class="hscroll" id="attachments"></div>
           <button type="button" onclick="delete_part()">delete part (including children)</button>
+          <button type="button" onclick="update_part()">update part (or add if not selected)</button>
         </div>
       </td>
     </tr>

public/partdb.js

@@ -204,3 +204,55 @@ function delete_part()
 	};
 	xhr.send();
 }
+
+function update_part()
+{
+	// the part to update
+	let part = {};
+	// its id
+	const results = document.getElementById('results');
+	if (results.selectedIndex >= 0) {
+		part.id = parseInt(results.options[results.selectedIndex].value);
+	}
+	// the fields
+	for (const field of fields) {
+		const input = document.getElementById('part_' + field);
+		if (input.tagName == "INPUT") {
+			part[field] = input.value;
+		} else if (input.tagName == "TEXTAREA") {
+			part[field] = input.innerHTML;
+		}
+	}
+	if (part["name"].length == 0) {
+		return;
+	}
+	// get distributors
+	part.distributors = [];
+	const distributors = document.getElementById('distributors');
+	for (const distributor of distributors.rows) {
+		part.distributors.push({"distributor": distributor.cells[0].innerText, "sku": distributor.cells[1].firstChild.value});
+	}
+	// get properties
+	part.properties = {};
+	const properties = document.getElementById('properties');
+	for (const prop of properties.rows) {
+		const name = prop.cells[0].firstChild.value;
+		const value = prop.cells[1].firstChild.value;
+		if (name && name.length > 0 && value && value.length > 0) {
+			part.properties[name] = value.split(",");
+		}
+	}
+	console.log(part);
+
+	var post = new XMLHttpRequest();
+	post.open("POST", "part");
+	post.setRequestHeader("Content-Type", "application/json;charset=UTF-8");
+	post.onload = function() {
+		clear();
+		search(); // refresh search
+	};
+	post.onerror = function() {
+		console.log("update part failed");
+	};
+	post.send(JSON.stringify(part));
+}

server.rb

@@ -222,3 +222,89 @@ get '/delete/:id' do
   delete_part(params['id'])
   return 200
 end
+
+post '/part' do
+  request.body.rewind
+  begin
+    part = JSON.parse(request.body.read)
+  rescue
+    halt 401, "not json"
+  end
+  puts part
+  if part["id"] then
+    # ensure part to update exists
+    statement = @db.prepare("SELECT id FROM part WHERE id = ?")
+    halt(401, "id not valid") if statement.execute(part["id"]).to_a.empty?
+  else
+    # add new part
+    halt(401, "name required") unless part["name"] and part["name"].length > 0
+    statement = @db.prepare("SELECT id FROM part WHERE name = ?")
+    halt(401, "name already existing") unless part = statement.execute(part["name"]).to_a.empty?
+    insert = @db.prepare("INSERT INTO part (name) VALUES (?)");
+    insert.execute(part["name"])
+    part["id"] = statement.execute(part["name"]).to_a[0]["id"]
+  end
+  # update fields
+  fields_txt = ["name", "description", "details", "package", "pincount", "family", "datasheet", "page"];
+  fields_txt.each do |field|
+    halt(401, "#{field} missing") unless part[field]
+    part[field] = nil if 0 == part[field].length
+    update = @db.prepare("UPDATE part SET #{field} = ? WHERE id = ?")
+    update.execute(part["id"], part[field])
+  end
+  fields_int = ["pincount"]
+  fields_int.each do |field|
+    halt(401, "#{field} missing") unless part[field]
+    if 0 == part[field].length then
+      part[field] = nil
+    else
+      part[field] = part[field].to_i
+    end
+    update = @db.prepare("UPDATE part SET #{field} = ? WHERE id = ?")
+    update.execute(part["id"], part[field])
+  end
+  # update manufacturer and package
+  field_ref = ["manufacturer", "package"]
+  field_ref.each do |field|
+    part[field] = nil if part[field] and 0 == part[field].length
+    if part[field] then
+      statement = @db.prepare("SELECT id FROM #{field} WHERE LOWER(name) = ?")
+      ref = statement.execute(part[field].downcase).to_a[0]
+      unless ref then
+        insert = @db.prepare("INSERT INTO #{field} (name) VALUES (?)");
+        insert.execute(part[field])
+      end
+      ref = statement.execute(part[field]).to_a[0]
+      update = @db.prepare("UPDATE part SET #{field} = ? WHERE id = ?")
+      update.execute(ref["id"], part["id"])
+    else
+      update = @db.prepare("UPDATE part SET #{field} = NULL WHERE id = ?")
+      update.execute(part["id"])
+    end
+  end
+  # update inventory
+  field = "location"
+  part[field] = nil if part[field] and 0 == part[field].length
+  part["location"] = nil if part["stock"] and 0 == part["stock"].length
+  if part[field] then
+    statement = @db.prepare("SELECT id FROM #{field} WHERE LOWER(name) = ?")
+    ref = statement.execute(part[field].downcase).to_a[0]
+    unless ref then
+      insert = @db.prepare("INSERT INTO #{field} (name) VALUES (?)");
+      insert.execute(part[field])
+    end
+    ref = statement.execute(part[field]).to_a[0]
+    statement = @db.prepare("SELECT id FROM inventory WHERE part = ? AND location = ?")
+    ref_inv = statement.execute(part["id"], ref["id"]).to_a[0]
+    unless ref_inv then
+      insert = @db.prepare("INSERT INTO inventory (part, location) VALUES (?,?)");
+      insert.execute(part["id"], ref["id"])
+    end
+    ref_inv = statement.execute(part["id"], ref["id"]).to_a[0]
+    update = @db.prepare("UPDATE inventory SET quantity = ? WHERE id = ?")
+    update.execute(part["stock"].to_i, ref_inv["id"])
+  else
+    delete = @db.prepare("DELETE FROM inventory WHERE part = ?")
+    delete.execute(part["id"])
+  end
+end