Tasks endpoint

sql/tasks/count.sql

@@ -0,0 +1 @@
+SELECT count(*) c FROM "tasks" WHERE owner = $1;

sql/tasks/hasNext.sql

@@ -0,0 +1 @@
+SELECT COUNT(*) > 0 r FROM "tasks" WHERE owner = $1 AND "id" > $2;

sql/tasks/hasPrev.sql

@@ -0,0 +1 @@
+SELECT COUNT(*) > 0 r FROM "tasks" WHERE owner = $1 AND "id" < $2;

sql/tasks/list.sql

@@ -9,6 +9,6 @@ SELECT
 FROM
     tasks
 WHERE
-    owner = $1
+    owner = $1 AND ($2 IS NULL OR id > $2) AND ($3 IS NULL OR id < $3)
 ORDER BY created_at ASC
-LIMIT $2 OFFSET $3;
+LIMIT $4;

sql/tasks/listReverse.sql

@@ -0,0 +1,14 @@
+SELECT 
+    id,
+    name,
+    notes,
+    schedule,
+    min_frequency,
+    max_frequency,
+    created_at
+FROM
+    tasks
+WHERE
+    owner = $1 AND ($2 IS NULL OR id > $2) AND ($3 IS NULL OR id < $3)
+ORDER BY created_at DESC
+LIMIT $4;