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imperfect_notes/pragy/Project Building - Psych - Coding 1.md

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+Psych Coding 1
+--------------
+
+Base Setup
+----------
+
+1. Create free account on Heroku
+1. Install Heroku CLI https://devcenter.heroku.com/articles/getting-started-with-java#set-up
+1. Install PostgreSQL https://www.postgresql.org/download/
+    ```bash
+    brew install postgres
+    sudo chown -R `whoami` /usr/local
+    ```
+1. Ensure postgres is started automatically on boot
+    ```bash
+    pg_ctl -D /usr/local/var/postgres start && brew services start postgresql
+    postgres -V
+    ```
+
+3. Create new Idea Project
+    1. Spring Initializer
+    1.
+        + SDK 11 or 13
+        + com.psych.game
+        + Scaler Backend Project - Psych
+        + Java 11
+        + Maven
+    1.
+        + Spring Boot Dev Tools
+        + Lombok
+        + Spring Web
+        + Rest Repositories
+        + Spring Web Services
+        + Spring Data JPA
+        + PostgreSQL Driver
+    1. name: pragypsych
+-- --
+
+Hello World
+-----------
+
+1. Create File: devtest.HelloController
+    ```java
+    package com.psych.game.devtest;
+
+    import org.springframework.web.bind.annotation.GetMapping;
+    import org.springframework.web.bind.annotation.RequestMapping;
+    import org.springframework.web.bind.annotation.RestController;
+
+    @RestController
+    @RequestMapping("/dev-test")
+    public class HelloController {
+        @GetMapping("/")
+        public String hello() {
+            return "Hello, World!";
+        }
+    }
+    ```
+1. Try Build & Run
+    - Build succeeds
+    - Run fails: Because No DB
+1. Run postgres
+    ```bash
+    psql postgres
+    \du                  # display users
+    \list                # list databases
+    create database psych_local;
+    \connect psych_local # connect to specific DB
+    \dt                  # display tables in current DB
+    # psql postgres -U pragyagarwal
+    ```
+1. Add psych_local DB to IntelliJ
+1. Create application.properties
+    ```java
+    spring.datasource.url=jdbc:postgresql://localhost:5432/psych_local
+    spring.jpa.hibernate.ddl-auto=update
+
+    ```
+1. Run again. Go to http://localhost:8080/dev-test/
+
+-- --
+
+Deploy on Heroku
+----------------
+
+1. Create new project.
+    ```bash
+    heroku create pragy-psych
+    ```
+1. goto https://pragy-psych.herokuapp.com/ to find nothing
+1. add git
+    ```bash
+    git init
+    git add .
+    git commit -m "Init"
+    ```
+1. add heroku remote
+    ```bash
+    git remote add heroku https://git.heroku.com/pragy-psych.git
+    ```
+1. Deploy
+    ```bash
+    git push heroku master
+    ```
+1. Error: Push Rejected - invalid target release: 11
+1. Create **system.properties**
+    ```java
+    java.runtime.version=11
+    ```
+1. Add, commit & deploy
+1. Goto https://pragy-psych.herokuapp.com/dev-test/
+1. Goto https://dashboard.heroku.com/apps/pragy-psych to see your stuff
+1. Note: it auto adds postgres free account
+1. See the logs
+    ```bash
+    heroku logs --tail
+    ```
+    
+-- --
+
+Make the models
+---------------
+
+
+-- --
+
+Test
+----
+
+https://pragy-psych.herokuapp.com/dev-test/
+https://pragy-psych.herokuapp.com/dev-test/questions
+https://pragy-psych.herokuapp.com/dev-test/populate
+
+
+-- --
+
+Post Lecture
+------------
+
+Restore
+
+[Google Docs – create and edit documents online, for free.](https://docs.google.com/document/d/1J1t-TFA-aw9ZS89LI4guAJ-muJeGTQ_BQB6Fan-zrk4/edit#)
+[YouTube](https://www.youtube.com/watch?v=8cSYhtKzlhE)