Hacking towards the second.py functionality

.envrc.sample

@@ -1,8 +1,9 @@
 export CELERY_BROKER_URL=redis://localhost:6379
 export CELERY_RESULT_BACKEND=redis://localhost:6379
-export FLASK_ENV=development
 export FLASK_APP=wsgi:app
+export FLASK_ENV=development
 export REDIS_HOST=localhost
 export REDIS_PORT=6379
 export REDIS_SESSION_DB=0
+export SECRET_KEY="aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
 export SERVER_PORT=0.0.0.0:8000

magic_app/app.py

@@ -57,9 +57,9 @@ def configure_celery(app):
 
 def configure_views(app):
     """Configure API resource views."""
-    from magic_app.views import home
+    from magic_app.views import apps
 
-    app.register_blueprint(home)
+    app.register_blueprint(apps)
 
 
 def configure_logging(app):

magic_app/config.py

@@ -1,6 +1,7 @@
 """The Application settings."""
 from os import environ, pardir
 from os.path import abspath, dirname, join
+from pathlib import Path
 
 
 class Base:
@@ -8,10 +9,10 @@ class Base:
 
     DEBUG = False
     JSON_AS_ASCII = False
+    SECRET_KEY = environ["SECRET_KEY"]
 
     APP_DIR = abspath(dirname(__file__))
     PROJECT_ROOT = abspath(join(APP_DIR, pardir))
-    SWAGGER_DIR = abspath(join(PROJECT_ROOT, "swagger_docs"))
 
     REDIS_HOST = environ["REDIS_HOST"]
     REDIS_PORT = environ["REDIS_PORT"]
@@ -25,9 +26,9 @@ class Development(Base):
     """The Development configuration."""
 
     ENV = "development"
-
     CELERY_ALWAYS_EAGER = True
     DEBUG = True
+    DATA_DIR = Path(Base.PROJECT_ROOT) / "data"
 
 
 class Testing(Base):
@@ -41,6 +42,7 @@ class Production(Base):
     """The production configuration."""
 
     ENV = "production"
+    DATA_DIR = "/data"
 
 
 CONFIG = {

magic_app/docker.py

@@ -0,0 +1 @@
+"""Docker interaction module"""

magic_app/forms.py

@@ -0,0 +1,50 @@
+"""Forms for app installation."""
+from os import environ
+
+from flask import request
+from flask_wtf import FlaskForm
+from wtforms import PasswordField, StringField
+from wtforms.validators import DataRequired, Length
+
+
+class GiteaInstallForm(FlaskForm):
+    """Gitea installation form."""
+
+    # "simple"
+    app_name = StringField("Application name", default="Git with a cup of tea")
+    domain = StringField("Domain name", validators=[DataRequired()],)
+    stack_name = StringField("Stack name", default="magic-app-gitea")
+
+    # "advanced"
+    db_host = StringField("Database host", default="mariadb:3306")
+    db_name = StringField("Database name", default="gitea")
+    db_type = StringField("Database type", default="mysql")
+    db_user = StringField("Database user", default="mysql")
+    ssh_host_port = StringField("SSH host port", default="2225")
+
+    # secrets
+    db_passwd = PasswordField(
+        "Database password", validators=[DataRequired(), Length(min=32)],
+    )
+    db_root_passwd = PasswordField(
+        "Database root password", validators=[DataRequired(), Length(min=32)],
+    )
+    internal_token = PasswordField(
+        "Internal secret token", validators=[DataRequired(), Length(min=105)],
+    )
+    jwt_secret = PasswordField(
+        "JWT secret", validators=[DataRequired(), Length(min=43)],
+    )
+    secret_key = PasswordField(
+        "Secret key", validators=[DataRequired(), Length(min=64)],
+    )
+
+
+def form_to_env(app_name, request_form):
+    """Load form data into a environment."""
+    env = environ.copy()
+
+    for key in request_form.keys():
+        env[key.upper()] = request.form[key]
+
+    return env

magic_app/tasks.py

@@ -1,7 +1,14 @@
 """Celery tasks module."""
 from magic_app.app import celery
+from magic_app.forms import form_to_env
+from magic_app.templates import clone_app_template, create_data_dir
 
 
 @celery.task
-def hello_world():
-    print("Hello, World")
+def install_app(app_name: str, form_data) -> None:
+    """Install an application."""
+    create_data_dir()
+    clone_app_template(app_name)
+
+    # Note(decentral1se): this is where I left off...
+    env = form_to_env()  # noqa

magic_app/templates.py

@@ -0,0 +1,29 @@
+"""Compose template handling."""
+from os import mkdir
+from os.path import exists
+from shlex import split
+from shutil import rmtree
+from subprocess import run
+
+from flask import current_app
+
+APP_TEMPLATES = {
+    "gitea": "https://git.autonomic.zone/compose-stacks/gitea",
+}
+
+
+def create_data_dir() -> None:
+    """Create data directory for compose templates."""
+    try:
+        mkdir(current_app.config["DATA_DIR"])
+    except FileExistsError:
+        pass
+
+
+def clone_app_template(app_name: str) -> None:
+    """Clone an application template repository."""
+    clone_path = current_app.config["DATA_DIR"] / app_name
+    clone_url = APP_TEMPLATES[app_name]
+    if exists(clone_path):
+        rmtree(clone_path)
+    run(split(f"git clone {clone_url} {clone_path}"))

magic_app/templates/app_install.html

@@ -0,0 +1,19 @@
+{% from "macros.html" import with_errors %}
+
+<!DOCTYPE html>
+<html lang="en">
+  <html>
+    <head>
+      <title>Install {{ app_name | capitalize }}</title>
+    </head>
+    <body>
+      <p>Install {{ app_name | capitalize }}</p>
+      <form method="POST" action="{{ url_for("apps.install", app_name=app_name) }}">
+        {% for field in form %} 
+          {{ field.label() }} {{ with_errors(field, style='font-weight: bold') }}
+        {% endfor %}
+        <input type="submit" value="Install" />
+      </form>
+    </body>
+  </html>
+</html>

magic_app/templates/app_list.html

@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<html lang="en">
+  <html>
+    <head>
+      <title>Application Listing</title>
+    </head>
+    <body>
+      <ul>
+        {% for app in apps %}
+        <li>
+          <a href="{{ url_for('apps.install', app_name=app) }}">{{ app }}</a>
+        </li>
+        {% endfor %}
+      </ul>
+    </body>
+  </html>
+</html>

magic_app/templates/app_status.html

@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<html lang="en">
+  <html>
+    <head>
+      <title>{{ app_name | capitalize }} Status</title>
+      <style>
+        table,
+        th,
+        td {
+          border: 1px solid black;
+        }
+      </style>
+    </head>
+    <body>
+      <table>
+        <tr>
+          <th>App</th>
+          <th>Status</th>
+        </tr>
+        <tr>
+          <th>{{ app_name }}</th>
+          <th>{{ status }}</th>
+        </tr>
+      </table>
+    </body>
+  </html>
+</html>

magic_app/templates/base.html

@@ -1,7 +0,0 @@
-<!DOCTYPE html>
-<html lang="en">
-  <html>
-    <head></head>
-    <body></body>
-  </html>
-</html>

magic_app/templates/macros.html

@@ -0,0 +1,16 @@
+{#
+  From:  https://wtforms.readthedocs.io/en/2.3.x/specific_problems/#rendering-errors
+  Usage: with_errors(form.field, style='font-weight: bold')
+#}
+
+{% macro with_errors(field) %}
+    <div class="form_field">
+    {% if field.errors %}
+        {% set css_class = 'has_error ' + kwargs.pop('class', '') %}
+        {{ field(class=css_class, **kwargs) }}
+        <ul class="errors">{% for error in field.errors %}<li>{{ error|e }}</li>{% endfor %}</ul>
+    {% else %}
+        {{ field(**kwargs) }}
+    {% endif %}
+    </div>
+{% endmacro %}

magic_app/views.py

@@ -1,10 +1,44 @@
 """View routing."""
-from flask import Blueprint
+from flask import Blueprint, redirect, render_template, url_for
 
-home = Blueprint("home", __name__)
+from magic_app.forms import GiteaInstallForm
+
+apps = Blueprint("apps", __name__)
 
 
-@home.route("/")
-def hello_world():
+@apps.route("/")
+def listing():
+    return render_template("app_list.html", apps=["gitea"])
 
-    return "Hello, World"
+
+@apps.route("/install/<app_name>", methods=("GET", "POST"))
+def install(app_name):
+    """Install an application."""
+    from magic_app.tasks import install_app
+
+    if app_name == "gitea":
+        form = GiteaInstallForm()
+
+    if form.validate_on_submit():
+        install_app.apply_async(args=[app_name])
+        return redirect(url_for("apps.status", app_name=app_name))
+
+    return render_template("app_install.html", app_name=app_name, form=form)
+
+
+@apps.route("/install-test/<app_name>")
+def install_test(app_name):
+    """Development aid to quickly test installation logic."""
+    from magic_app.tasks import install_app
+
+    install_app.apply_async(args=[app_name])
+
+    return f"<a href='{app_name}'>Try again?</a>"
+
+
+@apps.route("/status/<app_name>")
+def status(app_name):
+    """Show status of applications."""
+    return render_template(
+        "app_status.html", status="UNKNOWN", app_name=app_name
+    )

spikes/templates/second/install.html

@@ -10,10 +10,8 @@
   <body>
     <p>Install {{ app_name }}</p>
     <form method="POST" action="/deploy/{{ app_name }}">
-      {% for field in form %}
-        {{ field.label() }}
-        {{ with_errors(field, style='font-weight: bold') }}
-      {% endfor %}
+      {% for field in form %} {{ field.label() }} {{ with_errors(field,
+      style='font-weight: bold') }} {% endfor %}
       <input type="submit" value="Deploy" />
     </form>
   </body>