From a2a33aedb437ff85942df579b1e26e6ae3280ff5 Mon Sep 17 00:00:00 2001
From: Alexander Werner <alexander.werner@mawoh.de>
Date: Mon, 26 Nov 2018 23:14:28 +0100
Subject: [PATCH] Updated Pipfile, get-gpio

---
 Pipfile        |  1 +
 Pipfile.lock   | 45 ++++++++++++++++++++++++++-------------------
 carom/cli.py   | 18 ++++++++++++++++--
 carom/table.py | 45 +++++++++++++++++++++++++++++++++++++++++++++
 carom/utils.py | 13 +++++++++++++
 5 files changed, 101 insertions(+), 21 deletions(-)
 create mode 100644 carom/table.py
 create mode 100644 carom/utils.py

diff --git a/Pipfile b/Pipfile
index 4c2d247..1fb503b 100644
--- a/Pipfile
+++ b/Pipfile
@@ -13,6 +13,7 @@ colorama = "*"
 click-log = "*"
 click-didyoumean = "*"
 voluptuous = "*"
+terminaltables = "*"
 
 [dev-packages]
 "flake8" = "*"
diff --git a/Pipfile.lock b/Pipfile.lock
index 981f185..c38964c 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "07aac5a19e64863bc015b63d301912dc79586e7be06dd8056b60dd0e6fb26629"
+            "sha256": "471710975bfaa4492e9efc5df510666744e783264972376f1c14860496a536b1"
         },
         "pipfile-spec": 6,
         "requires": {
@@ -40,6 +40,7 @@
         },
         "click-didyoumean": {
             "hashes": [
+                "sha256:0b427ca37c9b85d92e75a915db95c1ac0d6efd65e8b89139eed398bbda074bd8",
                 "sha256:112229485c9704ff51362fe34b2d4f0b12fc71cc20f6d2b3afabed4b8bfa6aeb"
             ],
             "index": "pypi",
@@ -55,11 +56,11 @@
         },
         "colorama": {
             "hashes": [
-                "sha256:a3d89af5db9e9806a779a50296b5fdb466e281147c2c235e8225ecc6dbf7bbf3",
-                "sha256:c9b54bebe91a6a803e0772c8561d53f2926bfeb17cd141fbabcb08424086595c"
+                "sha256:05eed71e2e327246ad6b38c540c4a3117230b19679b875190486ddd2d721422d",
+                "sha256:f8ac84de7840f5b9c4e3347b3c1eaa50f7e49c2b07596221daec5edaabbd7c48"
             ],
             "index": "pypi",
-            "version": "==0.4.0"
+            "version": "==0.4.1"
         },
         "gpiozero": {
             "hashes": [
@@ -94,12 +95,19 @@
         },
         "rpi.gpio": {
             "hashes": [
-                "sha256:3a08d6ddf2fef5f82a8c981fa2e988a296c43e9c6755e8df691a89ad7620115d",
                 "sha256:a4210ad63bfe844e43995286de0d3950dfacfa0f3799bb9392770ac54a7d2e47"
             ],
             "index": "pypi",
             "version": "==0.6.5"
         },
+        "terminaltables": {
+            "hashes": [
+                "sha256:e24fb83140a5b04fac4f17e1996cc74809188de2896fb3a98eb1b670cc52bbdd",
+                "sha256:f3eb0eb92e3833972ac36796293ca0906e998dc3be91fbe1f8615b331b853b81"
+            ],
+            "index": "pypi",
+            "version": "==3.1.0"
+        },
         "urllib3": {
             "hashes": [
                 "sha256:61bf29cada3fc2fbefad4fdf059ea4bd1b4a86d2b6d15e1c7c0b582b9752fe39",
@@ -161,11 +169,11 @@
         },
         "colorama": {
             "hashes": [
-                "sha256:a3d89af5db9e9806a779a50296b5fdb466e281147c2c235e8225ecc6dbf7bbf3",
-                "sha256:c9b54bebe91a6a803e0772c8561d53f2926bfeb17cd141fbabcb08424086595c"
+                "sha256:05eed71e2e327246ad6b38c540c4a3117230b19679b875190486ddd2d721422d",
+                "sha256:f8ac84de7840f5b9c4e3347b3c1eaa50f7e49c2b07596221daec5edaabbd7c48"
             ],
             "index": "pypi",
-            "version": "==0.4.0"
+            "version": "==0.4.1"
         },
         "docutils": {
             "hashes": [
@@ -227,7 +235,6 @@
         },
         "markupsafe": {
             "hashes": [
-                "sha256:5e0432a10c901c46e4de52574d1d396bdde0bec8715496961546099c4e0ff16d",
                 "sha256:048ef924c1623740e70204aa7143ec592504045ae4429b59c30054cb31e3c432",
                 "sha256:130f844e7f5bdd8e9f3f42e7102ef1d49b2e6fdf0d7526df3f87281a532d8c8b",
                 "sha256:19f637c2ac5ae9da8bfd98cef74d64b7e1bb8a63038a3505cd182c3fac5eb4d9",
@@ -314,11 +321,11 @@
         },
         "pipenv": {
             "hashes": [
-                "sha256:117b0015837578cef25ee09c9d38094245966cbff92f0984e0f0fbebdbb5bc75",
-                "sha256:5f760d35de14982353437442d0d2c474bee139ffd69c01148abc11509f6422da",
-                "sha256:7e4b827307e6070468284caa332fcba9c60e532afd2a8ff4c0d6df8be6b9fadb"
+                "sha256:56ad5f5cb48f1e58878e14525a6e3129d4306049cb76d2f6a3e95df0d5fc6330",
+                "sha256:7df8e33a2387de6f537836f48ac6fcd94eda6ed9ba3d5e3fd52e35b5bc7ff49e",
+                "sha256:a673e606e8452185e9817a987572b55360f4d28b50831ef3b42ac3cab3fee846"
             ],
-            "version": "==2018.11.14"
+            "version": "==2018.11.26"
         },
         "pluggy": {
             "hashes": [
@@ -350,10 +357,10 @@
         },
         "pygments": {
             "hashes": [
-                "sha256:78f3f434bcc5d6ee09020f92ba487f95ba50f1e3ef83ae96b9d5ffa1bab25c5d",
-                "sha256:dbae1046def0efb574852fab9e90209b23f556367b5a320c0bcb871c77c3e8cc"
+                "sha256:6301ecb0997a52d2d31385e62d0a4a4cf18d2f2da7054a5ddad5c366cd39cee7",
+                "sha256:82666aac15622bd7bb685a4ee7f6625dd716da3ef7473620c192c0168aae64fc"
             ],
-            "version": "==2.2.0"
+            "version": "==2.3.0"
         },
         "pyparsing": {
             "hashes": [
@@ -364,11 +371,11 @@
         },
         "pytest": {
             "hashes": [
-                "sha256:488c842647bbeb350029da10325cb40af0a9c7a2fdda45aeb1dda75b60048ffb",
-                "sha256:c055690dfefa744992f563e8c3a654089a6aa5b8092dded9b6fafbd70b2e45a7"
+                "sha256:1d131cc532be0023ef8ae265e2a779938d0619bb6c2510f52987ffcba7fa1ee4",
+                "sha256:ca4761407f1acc85ffd1609f464ca20bb71a767803505bd4127d0e45c5a50e23"
             ],
             "index": "pypi",
-            "version": "==4.0.0"
+            "version": "==4.0.1"
         },
         "pytz": {
             "hashes": [
diff --git a/carom/cli.py b/carom/cli.py
index 60df687..5d82c43 100644
--- a/carom/cli.py
+++ b/carom/cli.py
@@ -5,6 +5,10 @@ from click_didyoumean import DYMGroup
 import click_log
 import logging
 
+from terminaltables import SingleTable
+
+from carom.table import cleanup
+
 logger = logging.getLogger('carom.cli')  # hard coded module name to support directly called module
 root_logger = logging.getLogger('')
 click_log.basic_config(root_logger)
@@ -21,7 +25,14 @@ def get_gpio():
     """
     Get the current status of all Tables.
     """
-    pass
+    from carom.table import tables
+    table_data = [("Table #", "Port", "in use")]
+    for table in tables:
+        table_data.append((table.num, table.port, table.in_use))
+    st = SingleTable(table_data)
+    st.title = "Tables"
+    print(st.table)
+
 
 
 @cli.command()
@@ -55,4 +66,7 @@ def check_config():
 
 
 if __name__ == "__main__":
-    cli()
+    try:
+        cli()
+    finally:
+        cleanup()
diff --git a/carom/table.py b/carom/table.py
new file mode 100644
index 0000000..a8b9eb1
--- /dev/null
+++ b/carom/table.py
@@ -0,0 +1,45 @@
+import logging
+
+from gpiozero import Button
+
+from carom.config import config
+from carom.utils import singleton
+
+logger = logging.getLogger(__name__)
+
+
+@singleton
+class Table:
+    def __init__(self, num, port):
+        self.num = num
+        self.port = port
+        self.button = Button(port, pull_up=False)
+
+    def __repr__(self):
+        return "<Table num={} port={} in_use={}>".format(self.num, self.port, self.in_use)
+
+    def __del__(self):
+        self.close()
+
+
+    @property
+    def in_use(self):
+        return self.button.is_active
+
+    def close(self):
+        logger.debug("Closing GPIO {}".format(self.port))
+        self.button.close()
+
+
+def cleanup():
+    for table in tables:
+        table.close()
+
+def _populate_tables():
+    for num, port in config['mapping'].items():
+        yield Table(num, port)
+
+
+tables = [table for table in _populate_tables()]
+
+__all__ = ('Table', 'tables', 'cleanup')
diff --git a/carom/utils.py b/carom/utils.py
new file mode 100644
index 0000000..cfbe019
--- /dev/null
+++ b/carom/utils.py
@@ -0,0 +1,13 @@
+def singleton(the_class):
+    """ decorator for a class to make a singleton out of it """
+    class_instances = {}
+
+    def get_instance(*args, **kwargs):
+        """ creating or just return the one and only class instance.
+            The singleton depends on the parameters used in __init__ """
+        key = (the_class, args, str(kwargs))
+        if key not in class_instances:
+            class_instances[key] = the_class(*args, **kwargs)
+        return class_instances[key]
+
+    return get_instance