Make the server optional to reduce main dependencies

Author: ncrocfer

MANIFEST.in

@@ -1 +1,3 @@
-include requirements.txt whatportis/ports.json README.rst LICENSE.txt test_whatportis.py
+include README.rst LICENSE.txt tox.ini
+
+graft tests

requirements.txt

@@ -5,7 +5,6 @@
         'whatportis=whatportis.cli:run',
     ]
 }
-requirements = open('requirements.txt').read()
 readme = open('README.rst').read()
 
 setup(
@@ -18,11 +17,20 @@
     long_description=readme,
     packages=['whatportis'],
     include_package_data=True,
-    install_requires=requirements,
+    install_requires=[
+        "simplejson",
+        "tinydb",
+        "requests",
+        "prettytable",
+        "click"
+    ],
     extras_require={
         "dev": [
             "pytest",
             "tox"
+        ],
+        "server": [
+            "flask"
         ]
     },
     entry_points=entry_points,

setup.py

@@ -4,5 +4,11 @@ envlist = py{27,33,34,35,36,37}
 [testenv]
 deps=
     pytest
-    -rrequirements.txt
+
+    simplejson
+    tinydb
+    requests
+    prettytable
+    click
+
 commands = pytest

tox.ini

@@ -9,7 +9,6 @@
 from tinydb import TinyDB
 
 from whatportis.db import get_database, get_ports
-from whatportis.server import app
 from whatportis.utils import as_table
 
 
@@ -54,15 +53,24 @@ def update_db(ctx, param, value):
     ctx.exit()
 
 
+# Change the server help if flask is installed
+server_help = "Start a RESTful server"
+try:
+    import flask
+    server_help += " (format <host> <port>)."
+except ImportError:
+    server_help += " (requires Flask)."
+
+
 @click.command()
 @click.version_option()
 @click.argument('PORT', required=False)
 @click.option('--like', is_flag=True, default=False,
               help='Search ports containing the pattern.')
 @click.option('--json', "use_json", is_flag=True, default=False,
               help='Format the output result as JSON.')
-@click.option("--server", type=(str, int), default=(None, None),
-              help="Start a RESTful server (Format <host> <port>).")
+@click.option("--server", default=[None] * 2, type=click.Tuple([str, int]),
+              help=server_help)
 @click.option("--update", is_flag=True, callback=update_db,
               expose_value=False, is_eager=True)
 def run(port, like, use_json, server):
@@ -71,7 +79,11 @@ def run(port, like, use_json, server):
         raise click.UsageError("Please specify a port")
 
     if server[0]:
-        app.run(host=server[0], port=server[1])
+        try:
+            from whatportis.server import app
+            app.run(host=server[0], port=server[1])
+        except ImportError:
+            click.echo("Dependencies are missing, please use `pip install whatportis[server]`.")
         return
 
     ports = get_ports(port, like)