bash script

CRUD.sh

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+source databaseChecker.sh
+####################################### INSERT DATA ##############################################
+function insertData {
+  local sqlStatment_invoice_master="INSERT INTO DB_Bash.invoice_master (Custname,invdate, invtotal) VALUES (\"$1\",\"$2\", $3);"
+#  local sqlStatment_invoice_detail="INSERT INTO DB_Bash.invoice_detail (invID, itemname, unitprice, quantity)VALUES (1,'wood',500,22);"
+
+  mysql -u $USER -p$PASS -e "$sqlStatment_invoice_master"
+#  mysql -u $USER -p$PASS -e "$sqlStatment_invoice_detail"
+  existCodeChecker
+}
+function insertData_UI {
+  echo "enter customer name : "
+  read customer_name
+  echo "enter invoice date : "
+  read invdate
+  echo "enter invoice total : "
+  read invtotal
+  insertData $customer_name $invdate $invtotal
+
+}
+
+####################################### Display Invoices #########################################
+function display_Invoices {
+  local sqlStatment_invoice_detail="select * from DB_Bash.invoice_detail;"
+  local sqlStatment_invoice_master="select * from DB_Bash.invoice_master;"
+  mysql -u $USER -p$PASS -e "$sqlStatment_invoice_detail"
+  mysql -u $USER -p$PASS -e "$sqlStatment_invoice_master"
+  existCodeChecker
+}
+
+####################################### Delete Invoices ##########################################
+function delete_Invoices {
+  local sqlStatment_invoice_detail="DELETE FROM DB_Bash.invoice_master WHERE invID=$1;"
+  local sqlStatment_invoice_master="DELETE FROM DB_Bash.invoice_detail WHERE id=$1;"
+  mysql -u $USER -p$PASS -e "$sqlStatment_invoice_detail"
+  mysql -u $USER -p$PASS -e "$sqlStatment_invoice_master"
+  existCodeChecker
+}
+
+
+function delete_Invoices_UI {
+  echo "enter ID"
+  read id
+  delete_Invoices $id
+}

README.md

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+# Bash Script Menu Demo 
+
+creating a bash script to preform a CRUD operation on mysql database
+
+## Table of contents
+
+- [Overview](#overview)
+    - [Screenshot](#screenshot)
+    - [Built with](#built-with)
+- [Author](#authors)
+
+## Overview
+
+### GIF
+
+
+![screen-gif](./documentation/Demo.GIF)
+
+<p align="right">(<a href="#top">back to top</a>)</p>
+
+### Built with
+
+* [bash script](https://www.php.net/)
+
+<p align="right">(<a href="#top">back to top</a>)</p>
+
+
+## Authors
+
+
+* LinkedIn - [Hegabovic](https://www.linkedin.com/in/hegab192)
+
+<p align="right">(<a href="#top">back to top</a>)</p>

app.sh

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+#!/bin/bash
+
+source menu.sh
+
+database_checker
+createTables
+
+while [ 1 ]; do
+      menu
+done

databaseChecker.sh

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+#########################################################
+############ exit code
+###               0 success
+###               10 can not connect to database
+
+USER=hegabovic
+PASS=Hegabo192
+DB=DB_Bash
+
+####################################### Exist Code Checker ##############################################
+function existCodeChecker {
+  if [ $? -ne 0 ]; then
+    return 10
+  fi
+  return 0
+}
+
+####################################### Database Checker ##############################################
+
+function database_checker {
+  local dbs="create database if not exists ${DB};"
+  mysql -u $USER -p$PASS -e "$dbs"
+  existCodeChecker
+}
+
+function createTables {
+  local createTable="create table if not exists DB_Bash.invoice_master
+                     (
+                         invID    int primary key auto_increment,
+                         Custname varchar(100),
+                         invdate  date,
+                         invtotal float
+                     );
+                     create table if not exists DB_Bash.invoice_detail
+                     (
+
+                         id        int primary key auto_increment,
+                         invID     int,
+                         itemname  varchar(50),
+                         unitprice int,
+                         quantity  int,
+                         FOREIGN KEY (invID) REFERENCES invoice_master (invID)
+                     );"
+  mysql -u $USER -p$PASS -e "$createTable"
+  existCodeChecker
+}
+
+
+
+
+
+
+

menu.sh

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+source CRUD.sh
+
+function menu() {
+    echo -ne "
+MAIN MENU
+1) Insert Invoices
+2) Delete Invoices
+3) Display Invoices
+4) Exit
+Choose an option:  "
+    read -r ans
+    case $ans in
+    1)
+        insertData_UI
+        menu
+        ;;
+    2)
+        delete_Invoices_UI
+        menu
+        ;;
+    3)
+        display_Invoices
+        menu
+        ;;
+    4)
+        echo "Bye bye."
+        exit 0
+        ;;
+    *)
+        echo "Wrong option."
+        exit 1
+        ;;
+    esac
+}