Set up cron tasks

We want to configure our tasks with slightly more of an environment than
a direct invocation gives us so this sets up a directory of shell
scripts for each, currently used, cron invocation.

In particular we want the GitHub and Slack ingestors to look for data
from yesterday so we get a full days data and that needs access to
`date`.

app.json

@@ -0,0 +1,12 @@
+{
+  "cron": [
+    {
+      "command": "cron/daily.sh",
+      "schedule": "@daily"
+    },
+    {
+      "command": "cron/weekly.sh",
+      "schedule": "@weekly"
+    }
+  ]
+}

cron/daily.sh

@@ -0,0 +1,27 @@
+#!/bin/bash
+
+set -euo pipefail
+
+# we want to get data for a full day, an easy way to do this is to always look
+# at yesterday's data.
+# the yesterday variable is here to make it easier for commands to do that, but
+# there's no requirement that they do.
+yesterday=$(date -d "1 day ago" '+%F')
+
+# ebmdatalab PR stats
+python -m metrics github pr-queue ebmdatalab "$yesterday"
+python -m metrics github pr-queue ebmdatalab "$yesterday" --days-threshold=2
+python -m metrics github pr-queue ebmdatalab "$yesterday" --days-threshold=10
+python -m metrics github pr-queue ebmdatalab "$yesterday" --days-threshold=30
+python -m metrics github pr-queue ebmdatalab "$yesterday" --days-threshold=60
+python -m metrics github pr-throughput ebmdatalab "$yesterday"
+
+# opensafely PR stats
+python -m metrics github pr-queue opensafely "$yesterday"
+python -m metrics github pr-queue opensafely "$yesterday" --days-threshold=2
+python -m metrics github pr-queue opensafely "$yesterday" --days-threshold=10
+python -m metrics github pr-queue opensafely "$yesterday" --days-threshold=30
+python -m metrics github pr-queue opensafely "$yesterday" --days-threshold=60
+
+# slack
+python -m metrics slack tech-support "$yesterday"

cron/weekly.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+set -euo pipefail
+
+yesterday=$(date -d "1 day ago" '+%F')
+
+python -m metrics github pr-throughput ebmdatalab "$yesterday" --days=7
+python -m metrics github pr-throughput opensafely "$yesterday" --days=7