PostgresClient: Basic implementation of #build_command

Correctly builds the required arguments. Doesn't handle passwords at
all.

1 files changed, 14 insertions, 0 deletions

diff --git a/lib/dbshell/postgres_client.rb b/lib/dbshell/postgres_client.rb
index a22ccf7..b77e681 100644
--- a/lib/dbshell/postgres_client.rb
+++ b/lib/dbshell/postgres_client.rb
@@ -1,4 +1,18 @@
 class DBShell::PostgresClient
+  EXECUTABLE_NAME = 'psql'
+
   def self.build_command(db_info)
+    args = [EXECUTABLE_NAME]
+
+    host = db_info['host']
+    port = db_info['port']
+    db_name = db_info['database']
+    user = db_info['username']
+    password = db_info['password']
+
+    args.push('-U', user) if user
+    args.push('-h', host) if host
+    args.push('-p', port) if port
+    args.push(db_name)
   end
 end