From d8af80b1b347456cb24e53025aec780c53c01ae6 Mon Sep 17 00:00:00 2001
From: tzachi-dar <tzachi.dar@gmail.com>
Date: Sat, 18 Dec 2021 07:37:09 +0200
Subject: [PATCH] Add a script to delete device status entries that are older
 than 2 months. (#1232)

* Add a script to delete device status entries that are older than 2 months.

Signed-off-by: Tzachi Dar <tzachi.dar@gmail.com>

* Fixes to delete old device status:
1) Create a local backup of the data.
2) Add number of days to delete as a parameter.
3) Add a nightly mode (parameters are given as enviorment variables).

* Write the backedup records in one line.

* New implmentation:
Delete all entries in one command.

* Fix enviorment variable for nightly mode.
---
 bin/ns-delete-old-devicestatus.sh | 60 +++++++++++++++++++++++++++++++
 1 file changed, 60 insertions(+)
 create mode 100755 bin/ns-delete-old-devicestatus.sh

diff --git a/bin/ns-delete-old-devicestatus.sh b/bin/ns-delete-old-devicestatus.sh
new file mode 100755
index 000000000..d7c5c8573
--- /dev/null
+++ b/bin/ns-delete-old-devicestatus.sh
@@ -0,0 +1,60 @@
+#!/bin/bash
+
+source $(dirname $0)/oref0-bash-common-functions.sh || (echo "ERROR: Failed to run oref0-bash-common-functions.sh. Is oref0 correctly installed?"; exit 1)
+
+usage "$@" <<EOF
+Usage: $self --find <NIGHTSCOUT_HOST> <API_SECREAT> <number_of_days>- No-op version, find out what delete would do.
+$self delete <NIGHTSCOUT_HOST>  <API_SECREAT> <number_of_days> - move  entries from NIGHTSCOUT_HOST devicestatus collection to "$HOME/myopenaps/backup
+$self nightly <number_of_days> - move  entries from NIGHTSCOUT_HOST devicestatus collection to "$HOME/myopenaps/backup
+EOF
+
+function write_backup() {
+json -a -o jsony-0 >> $BACKUP_DIR/devicestatus.txt
+}
+
+export API_SECRET
+test -n "$3" && API_SECRET=$(nightscout hash-api-secret $3)
+test -n "$4" && NUM_DAYS=$4
+BACKUP_DIR="$HOME/myopenaps"/backup
+mkdir -p $BACKUP_DIR
+
+ENDPOINT=$2/api/v1/devicestatus
+
+if [ $1 = "nightly" ]; then
+   test -n "$2" && NUM_DAYS=$2
+   ENDPOINT=$NIGHTSCOUT_HOST/api/v1/devicestatus
+fi
+
+if [[ -z "$API_SECRET" || -z "$NUM_DAYS" ]] ; then
+  test -z "$API_SECRET" && echo API_SECRET undefined.
+  test -z "$NUM_DAYS" && echo NUM_DAYS undefined.
+  print_usage
+  exit 1;
+fi
+
+date_string=$(date -d "-$NUM_DAYS days" +%Y-%m-%d)
+fetch_cmd="curl  --compressed -s -g $ENDPOINT.json?find\[created_at\]\[\\"\$"lte\]=$date_string\&count=100000"
+delete_cmd="curl -X DELETE -H \"API-SECRET: $API_SECRET\"  -s -g $ENDPOINT.json?find\[created_at\]\[\\"\$"lte\]=$date_string\&count=100000"
+
+case "$1" in
+  --find)
+    echo $fetch_cmd
+    echo $delete_cmd
+    ;;
+  delete)
+    #echo $fetch_cmd
+    #echo $delete_cmd
+    eval $fetch_cmd | write_backup
+    eval $delete_cmd
+    ;;
+  nightly)
+    #echo $fetch_cmd
+    #echo $delete_cmd
+    eval $fetch_cmd | write_backup
+    eval $delete_cmd
+    ;;
+  *|help|--help|-h)
+    print_usage
+    exit 1;
+    ;;
+esac