From fc0294326db1a1f41eafb16735878fad521af044 Mon Sep 17 00:00:00 2001
From: linsui <2873532-linsui@users.noreply.gitlab.com>
Date: Tue, 10 Sep 2024 19:56:29 +0800
Subject: [PATCH] tools: add keep-latest script

---
 tools/keep-latest.sh | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100755 tools/keep-latest.sh

diff --git a/tools/keep-latest.sh b/tools/keep-latest.sh
new file mode 100755
index 0000000000..bd6d1b7e8b
--- /dev/null
+++ b/tools/keep-latest.sh
@@ -0,0 +1,31 @@
+#! /usr/bin/env bash
+
+set -e
+
+last_commit=$(git log --grep='Update known apks' | grep commit | head -n 1 | sed -E -n 's/commit (.*)/\1/p')
+changed_files=$(git diff --name-only "$last_commit" HEAD)
+
+for file in $changed_files; do
+  if [[ $file == *.yml && $(dirname "$file") == "metadata" ]]; then
+    diff=$(git diff "$last_commit" HEAD -- "$file")
+    removed_versions=$(grep "\-    versionCode: " <<< "$diff" | sed -E -n "s/.*versionCode: ([0-9]+)/\1/p")
+    new_versions=$(grep "+    versionCode: "  <<< "$diff" | sed -E -n "s/.*versionCode: ([0-9]+)/\1/p")
+    # When an old version is removed the diff may have both deletion and addition for the same version
+    for version in $removed_versions; do
+      new_versions=$(sed "/$version/d" <<< "$new_versions")
+    done
+    new_version_num=$(wc -l <<< "$new_versions")
+
+    keep_num=$(sed -z -E -n 's/.*VercodeOperation:\n((  -[^\n]*\n)+).*/\1/p' "$file" | wc -l)
+    [[ $keep_num == 0 ]] && keep_num=1
+
+    if [[ $new_version_num -gt $keep_num ]]; then
+      remove_versions=$(head -n -"$keep_num" <<< "$new_versions")
+      echo "Cleaning $file $remove_versions"
+      for version in $remove_versions; do
+        sed -i "/versionCode: $version/,/^$/d" "$file"
+        sed -i -E -z 's/\n  - versionName:[^\n]+\n  -/\n  -/' "$file"
+      done
+    fi
+  fi
+done