Add AccountService and ProjectService.

src/main/scala/service/AccountService.scala

@@ -0,0 +1,12 @@
+package service
+
+import model._
+import scala.slick.driver.H2Driver.simple._
+import Database.threadLocalSession
+
+trait AccountService {
+
+  def getAccountByUserName(userName: String): Option[Account] =
+    Query(Accounts) filter(_.userName is userName.bind) firstOption
+
+}

src/main/scala/service/ProjectService.scala

@@ -0,0 +1,37 @@
+package service
+
+import model._
+import scala.slick.driver.H2Driver.simple._
+import Database.threadLocalSession
+
+trait ProjectService { self: AccountService =>
+
+  /**
+   * Creates a new project.
+   *
+   * The project is created as public repository at first. Users can modify the project type at the repository settings
+   * page after the project creation to configure the project as the private repository.
+   *
+   * @param projectName the project name
+   * @param userName the user name of the project owner
+   * @param description the project description
+   * @return the created project id
+   */
+  def createProject(projectName: String, userName: String, description: Option[String]): Long = {
+    // TODO create a git repository also here?
+
+    val currentDate = new java.sql.Date(System.currentTimeMillis)
+    Projects.ins returning Projects.projectId insert
+      Project(
+        projectId        = None,
+        projectName      = projectName,
+        userId           = getAccountByUserName(userName).get.userId.get,
+        projectType      = 0  /* 0:public, 1:private */,
+        description      = description,
+        defaultBranch    = "master",
+        registeredDate   = currentDate,
+        updatedDate      = currentDate,
+        lastActivityDate = currentDate)
+  }
+
+}