From 72a98e1f2d84c79f397a9974c0060ef6eee8fe8a Mon Sep 17 00:00:00 2001
From: Hyperling <me@hyperling.com>
Date: Wed, 22 Mar 2023 08:12:15 -0500
Subject: [PATCH] Move the DB setup to shell. Working great.

---
 setup_db.sh | 78 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 78 insertions(+)
 create mode 100755 setup_db.sh

diff --git a/setup_db.sh b/setup_db.sh
new file mode 100755
index 0000000..23d505e
--- /dev/null
+++ b/setup_db.sh
@@ -0,0 +1,78 @@
+#!/bin/bash
+# Date: 2023-03-22
+# Developer: Hyperling
+# Purpose: Check if tables exist and if not then creates them
+
+DIR=`dirname $0`
+PROG=`basename $0`
+if [[ $DIR == "." ]]; then
+	DIR="`pwd`"
+	echo $DIR/$PROG
+fi
+DB="$DIR/db/main"
+DEBUG="$1"
+
+## Functions ##
+
+function check_table {
+	# Validate that the table exists in the database. If so then sqlite returns
+	#  the DDL used to create it and we return success (0). Otherwise fail (1).
+	table_name="$1"
+	echo "Checking for $table_name..."
+	typeset -l result
+	result=`
+		sqlite3 $DB <<- EOF
+			.schema $table_name
+		EOF
+	`
+	[[ -n $DEBUG ]] && echo $result
+	if [[ $result == *"create table $table_name"* ]]; then
+		echo "Found it!"
+		return 0
+	fi
+	echo "Table not found."
+	return 1
+}
+
+function run_ddl {
+	# 
+	file_name="$1"
+	echo "Running $file_name..."
+	sqlite3 $DB <<- EOF
+		.echo on
+		.read $file_name
+	EOF
+}
+
+function list_ddl {
+	# List the full path of the table files which need to be run.
+	ls $DIR/db/DDL/*
+}
+
+## Main ##
+echo "Ensuring DDL is applied and all patches are complete."
+
+# Lop through tables and their DDL.
+list_ddl | while read table_file; do
+	echo "*** $table_file ***"
+	
+	# Get the name of the table based on the filename with no extension.
+	table=`basename $table_file`
+	table=${table//.sql/}
+
+	# Check for the table.
+	check_table $table || {
+		# If the check fails, run the create statement.
+		run_ddl $table_file && {
+			# If the create succeeds, check for the table.
+			check_table $table || {
+				# If the check fails (again), throw an error and quit.
+				echo "ERROR: Could not create $table!"
+				exit 1
+			}
+		}
+	}
+	echo "Success!"
+done
+
+exit 0