add: basic macro functions

add: better migration handling (transactions)

sql/cache.sql

@@ -1,3 +1,5 @@
+-- a key-value table used for the json-cache
+
 CREATE TABLE cache (
    key          STRING
                 PRIMARY KEY,

sql/migration_0.sql

@@ -1,4 +1,6 @@
-create table controllers
+-- base migration
+
+CREATE TABLE controllers
 (
     id      INTEGER
             PRIMARY KEY
@@ -14,7 +16,7 @@ create table controllers
                 NOT NULL
 );
 
-create table relays
+CREATE TABLE relays
 (
     id              INTEGER
                     PRIMARY KEY
@@ -28,7 +30,7 @@ create table relays
                     ON DELETE CASCADE
 );
 
-create table schedules
+CREATE TABLE schedules
 (
     id      INTEGER
             PRIMARY KEY
@@ -40,7 +42,7 @@ create table schedules
     periods BLOB
 );
 
-create table tags
+CREATE TABLE tags
 (
     id      INTEGER
             PRIMARY KEY
@@ -50,7 +52,7 @@ create table tags
             UNIQUE
 );
 
-create table junction_tag
+CREATE TABLE junction_tag
 (
     tag_id          INTEGER
                     NOT NULL
@@ -64,7 +66,7 @@ create table junction_tag
                     ON DELETE CASCADE
 );
 
-create table junction_relay_schedule
+CREATE TABLE junction_relay_schedule
 (
     weekday         SMALLINT
                     NOT NULL,

sql/migration_1.sql

@@ -0,0 +1,28 @@
+-- migration to add macros
+
+CREATE TABLE macros
+(
+    id      INTEGER
+            PRIMARY KEY
+            AUTOINCREMENT,
+    uid     BLOB
+            NOT NULL
+            UNIQUE,
+    name    VARCHAR(128)
+);
+
+CREATE TABLE junction_macro
+(
+    macro_id    INTEGER
+                NOT NULL
+                REFERENCES macros (id)
+                ON DELETE CASCADE,
+    relay_id    INTEGER
+                REFERENCES relays (id)
+                ON DELETE CASCADE,
+    schedule_id INTEGER
+                REFERENCES schedules (id)
+                ON DELETE CASCADE,
+    weekday     SMALLINT
+                NOT NULL
+);