7 files changed, 204 insertions, 0 deletions

diff --git a/build-on-non-guix.sh b/build-on-non-guix.sh
new file mode 100755
index 0000000..be81361
--- /dev/null
+++ b/build-on-non-guix.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+docker run --privileged --name tmp --rm -it -v $(pwd):/smart-relay -w /smart-relay metacall/guix sh -c './build.sh'
+
diff --git a/build.sh b/build.sh
new file mode 100755
index 0000000..52820f1
--- /dev/null
+++ b/build.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+cp $(guix time-machine -C channels.scm -- pack -f docker -m manifest.scm) docker-mqtt-smart-relay.tar.gz
+
diff --git a/channels.scm b/channels.scm
new file mode 100644
index 0000000..9e22649
--- /dev/null
+++ b/channels.scm
@@ -0,0 +1,11 @@
+(list (channel
+       (name 'guix)
+       (url "https://git.savannah.gnu.org/git/guix.git")
+       (branch "master")
+       (commit
+        "8c6e724686ac37ff7955b97d9bfd03176b14d82a")
+       (introduction
+        (make-channel-introduction
+         "9edb3f66fd807b096b48283debdcddccfea34bad"
+         (openpgp-fingerprint
+          "BBB0 2DDF 2CEA F6A8 0D1D  E643 A2A0 6DF2 A33A 54FA")))))
diff --git a/create-smart-relay-containter.sh b/create-smart-relay-containter.sh
new file mode 100755
index 0000000..1eaa954
--- /dev/null
+++ b/create-smart-relay-containter.sh
@@ -0,0 +1,18 @@
+#!/bin/sh
+
+if [[ ! $1 ]]; then
+    echo "Usage: "
+    echo "  ./create-smart-relay-containter.sh [mqtt-password]"
+    exit;
+fi;
+
+docker run \
+       -d \
+       --rm \
+       --network host \
+       -v /dev/ttyUSB0:/dev/ttyUSB0 \
+       -v smart-relay-racket-files:/.local \
+       --privileged \
+       racket-smart-relay-bash-nss-certs \
+       smart-relay "#:host \"mqtt.hack\" #:username \"iot_basic\" #:password \"$1\" #:topic-name \"hsp/bobma/smart-relay\""
+
diff --git a/manifest.scm b/manifest.scm
new file mode 100644
index 0000000..91100f3
--- /dev/null
+++ b/manifest.scm
@@ -0,0 +1,114 @@
+(use-modules (guix packages)
+             (guix git-download)
+             (guix build-system cmake)
+             (guix build-system copy)
+             (guix utils)
+             (guix gexp)
+             (gnu packages racket)
+             (gnu packages emacs-xyz)
+             ((guix licenses) #:prefix license:))
+
+(define paho-mqtt-c
+  (package
+    (name "paho-mqtt-c")
+    (version "1.3.13")
+    (source (origin
+              (method git-fetch)
+              (uri (git-reference
+                    (url "https://github.com/eclipse/paho.mqtt.c")
+                    (commit (string-append "v" version))))
+              (file-name (git-file-name name version))
+              (sha256
+               (base32 "1y5lsh41kszyjcrxrjshs838l23ncdyssxk848ij1bq0jix2g93l"))))
+    (build-system cmake-build-system)
+    (arguments
+     '(#:tests? #f)) ;; Disable tests
+    (synopsis "Eclipse Paho MQTT C client library")
+    (description
+     "Eclipse Paho MQTT C client library.")
+    (home-page "https://www.eclipse.org/paho/")
+    (license license:epl1.0)))
+
+(define (make-racket! package-to-inherit)
+  (package
+    (inherit package-to-inherit)
+    (arguments
+     (substitute-keyword-arguments (package-arguments package-to-inherit)
+       ((#:phases those-phases #~%standard-phases)
+        #~(modify-phases #$those-phases
+            (add-after 'install 'wrap-racket
+              (lambda* (#:key outputs inputs #:allow-other-keys)
+                (let* ((out (assoc-ref outputs "out"))
+                       (bin (string-append out "/bin/racket"))
+                       (libpaho (string-append (assoc-ref inputs "paho-mqtt-c")
+                                               "/lib")))
+                  (wrap-program bin
+                    `("LD_LIBRARY_PATH" ":" prefix
+                      ,(list libpaho))))))))))
+    (inputs
+     (modify-inputs (package-inputs package-to-inherit)
+                    (prepend paho-mqtt-c)))))
+
+(define racket-minimal! (make-racket! racket-minimal))
+(define racket! (make-racket! racket))
+
+(define smart-relay
+  (package
+    (name "smart-relay")
+    (version "0.1.0")
+    (source
+     (local-file "src" #:recursive? #t))
+    (build-system copy-build-system)
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (add-before 'install 'change-paths
+           (lambda* (#:key outputs #:allow-other-keys)
+             (let ((out  (assoc-ref outputs "out")))
+               (substitute* "smart-relay.sh"
+                 (("smart-relay.rtk")
+                  (string-append out "/share/smart-relay.rtk"))))))
+         (add-before 'install 'move-files
+           (lambda* (#:key inputs outputs #:allow-other-keys)
+             (let* ((out  (assoc-ref outputs "out"))
+                    (bin  (string-append out "/bin/"))
+                    (share  (string-append out "/share/")))
+               (mkdir-p bin)
+               (mkdir-p share)
+               (chmod "smart-relay.sh" #o555)
+               (copy-recursively "smart-relay.sh"
+                                 (string-append bin "smart-relay"))
+               (copy-recursively "smart-relay.rtk"
+                                 (string-append share "smart-relay.rtk"))
+               (delete-file-recursively "smart-relay.sh")
+               (delete-file-recursively "smart-relay.rtk")))))))
+    (synopsis "Lisp program to control usb relay over mqtt")
+    (description "Lisp program to control usb relay over mqtt")
+    (home-page "https://git.jdlugosz.com/hsp/smart-relay")
+    (license license:unlicense)))
+
+(define emacs-geiser-racket!
+  (package
+    (inherit emacs-geiser-racket)
+    (inputs
+     (modify-inputs (package-inputs emacs-geiser-racket)
+                    (delete "racket")
+                    (prepend racket!)))))
+
+
+(if (getenv "DEV_SHELL")
+    (concatenate-manifests
+     (list (packages->manifest
+            (list racket!
+                  emacs-geiser-racket!))
+           (specifications->manifest
+            (list "racket"
+                  "emacs-racket-mode"
+                  "emacs"))))
+    (concatenate-manifests
+     (list (packages->manifest
+            (list racket!
+                  smart-relay))
+           (specifications->manifest
+            (list "bash"
+                  "nss-certs")))))
diff --git a/src/smart-relay.rtk b/src/smart-relay.rtk
new file mode 100644
index 0000000..270780a
--- /dev/null
+++ b/src/smart-relay.rtk
@@ -0,0 +1,48 @@
+(module smart-relay racket/base
+  (require mqtt-client)
+  (provide main)
+
+  (define (make-send-to-dev data)
+    (lambda (dev)
+      (with-output-to-file dev
+        #:exists 'truncate
+        #:mode 'binary
+        (lambda ()
+          (write-bytes data)))))
+
+  (define send-message-on
+    (make-send-to-dev (bytes  #xA0 #x01 #x01 #xA2)))
+  (define send-message-off
+    (make-send-to-dev (bytes  #xA0 #x01 #x00 #xA1)))
+
+  (define (make-toggle-relay dev)
+    (let ((turn-on? #t))
+      (lambda ()
+        (displayln (format "Relay on ~a toggled" dev))
+        (if turn-on?
+            (send-message-on dev)
+            (send-message-off dev))
+        (set! turn-on? (not turn-on?)))))
+
+  (define (main #:host        [host        "localhost"]
+                #:username    [username    #f]
+                #:password    [password    #f]
+                #:client-name [client-name "smart-relay"]
+                #:topic-name  [topic-name  "hsp/bobma/smart-relay"]
+                #:relay-dev   [relay-dev   "/dev/ttyUSB0"])
+    (define toggle-relay (make-toggle-relay relay-dev))
+    (mqtt/with-client (host client-name)
+      (mqtt/with-connection (#:keep-alive-interval 20
+                             #:clean-session       #t
+                             #:username            username
+                             #:password            password)
+
+        (mqtt/subscribe topic-name)
+        (let loop ()
+          (mqtt/with-message-recv (topic payload)
+            (displayln (format "Message \"~a\" recieved on topic \"~a\"" payload topic))
+            (cond
+              ((string=? (bytes->string/utf-8 payload)
+                         "toggle")
+               (toggle-relay))))
+          (loop))))))
diff --git a/src/smart-relay.sh b/src/smart-relay.sh
new file mode 100755
index 0000000..af5fa26
--- /dev/null
+++ b/src/smart-relay.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+raco pkg install mqtt-client
+racket -e "(begin (require (file \"smart-relay.rtk\")) (main $@))"
+