From b4c9f173bd95833472b68a3df547057ce06f0877 Mon Sep 17 00:00:00 2001
From: ange <ange@yw5n.com>
Date: Mon, 5 Feb 2024 16:03:13 +0100
Subject: [PATCH] feat(fdroid): automatic apk download

---
 fdroid/.env                           |  1 +
 fdroid/Dockerfile                     |  4 +++-
 fdroid/apks.txt                       |  6 ++++++
 fdroid/compose.yaml                   |  2 ++
 fdroid/entrypoint.sh                  | 10 ++++-----
 fdroid/scripts/get_apks.sh            | 31 +++++++++++++++++++++++++++
 fdroid/scripts/get_github_dl_links.sh | 19 ++++++++++++++++
 fdroid/scripts/get_gitlab_dl_links.sh | 20 +++++++++++++++++
 8 files changed, 87 insertions(+), 6 deletions(-)
 create mode 100644 fdroid/apks.txt
 create mode 100755 fdroid/scripts/get_apks.sh
 create mode 100755 fdroid/scripts/get_github_dl_links.sh
 create mode 100755 fdroid/scripts/get_gitlab_dl_links.sh

diff --git a/fdroid/.env b/fdroid/.env
index b00ab64..e4c4478 100644
--- a/fdroid/.env
+++ b/fdroid/.env
@@ -2,6 +2,7 @@ BASE_URL=fdroid.
 EMAIL=
 
 REPO_NAME=fdroid
+CRON_APP_UPDATE='0 0 * * 1'
 
 PUID=1000
 PGID=1000
diff --git a/fdroid/Dockerfile b/fdroid/Dockerfile
index 4320ec2..c332ab4 100644
--- a/fdroid/Dockerfile
+++ b/fdroid/Dockerfile
@@ -1,7 +1,9 @@
 FROM docker.io/nginx:latest
 RUN apt-get update                                \
     && apt-get install -y --no-install-recommends \
+        cron                                      \
         fdroidserver                              \
     && rm -rf /var/lib/apt/lists/*
-COPY entrypoint.sh /docker-entrypoint.d/99-init-fdroid.sh
+COPY entrypoint.sh /docker-entrypoint.d/99-entrypoint.sh
+COPY scripts/ /usr/local/bin/
 COPY default.conf /etc/nginx/conf.d/
diff --git a/fdroid/apks.txt b/fdroid/apks.txt
new file mode 100644
index 0000000..6f57f80
--- /dev/null
+++ b/fdroid/apks.txt
@@ -0,0 +1,6 @@
+# 1 URL by line
+# Supported URLS patterns:
+# - .*github.com/OWNER/REPO.*
+# - .*gitlab.com/OWNER/REPO.*
+# Exemple:
+# https://gitlab.com/fdroid/fdroidclient
diff --git a/fdroid/compose.yaml b/fdroid/compose.yaml
index 96ec2bd..26dbf2b 100644
--- a/fdroid/compose.yaml
+++ b/fdroid/compose.yaml
@@ -18,10 +18,12 @@ services:
     environment:
       - BASE_URL
       - REPO_NAME
+      - CRON_APP_UPDATE
       - PUID
       - PGID
     volumes:
       - ./repo/:/repo/
+      - ./apks.txt:/:ro
     networks:
       - nginx
 
diff --git a/fdroid/entrypoint.sh b/fdroid/entrypoint.sh
index 411d1ad..e373122 100755
--- a/fdroid/entrypoint.sh
+++ b/fdroid/entrypoint.sh
@@ -7,10 +7,10 @@
         -e "/repo_url/s .* repo_url:\ https://$BASE_URL/repo " \
         -e "/repo_name/s .* repo_name:\ \"$REPO_NAME\" "       \
         config.yml
-
-    fdroid update -c
 )
 
-if [ -n "$PUID" ]; then
-    chown -R "$PUID:$PGID" /repo/
-fi
+get_apks.sh
+
+echo "$CRON_APP_UPDATE root get_apks.sh" > /etc/cron.d/get_new_apks
+
+/etc/init.d/cron start
diff --git a/fdroid/scripts/get_apks.sh b/fdroid/scripts/get_apks.sh
new file mode 100755
index 0000000..1a35e94
--- /dev/null
+++ b/fdroid/scripts/get_apks.sh
@@ -0,0 +1,31 @@
+#!/bin/bash -e
+
+SCRIPT_PATH="$(dirname "$0")"
+
+function get_links() {
+    FILE="$1"
+
+    awk 'NF && $1!~/^#/' "$FILE" | while read -r URL; do
+        case "$URL" in
+            *github.com*)
+                "$SCRIPT_PATH/get_github_dl_links.sh" "$URL"
+                ;;
+            *gitlab.com*)
+                "$SCRIPT_PATH/get_gitlab_dl_links.sh" "$URL"
+                ;;
+            *)
+                ;;
+        esac
+    done
+}
+
+LINKS="$(get_links apks.txt)"
+
+(cd /repo/
+    xargs -n1 -P8 curl -LO <<< "$LINKS"
+    fdroid update -c
+)
+
+if [ -n "$PUID" ]; then
+    chown -R "$PUID:$PGID" /repo/
+fi
diff --git a/fdroid/scripts/get_github_dl_links.sh b/fdroid/scripts/get_github_dl_links.sh
new file mode 100755
index 0000000..99874e6
--- /dev/null
+++ b/fdroid/scripts/get_github_dl_links.sh
@@ -0,0 +1,19 @@
+#!/bin/bash -e
+
+API='https://api.github.com'
+CONTENT_TYPE='"application/vnd.android.package-archive"'
+
+function get_urls() {
+    local repo="$1"
+
+    curl -sSL "$API/repos/$repo/releases/latest" | \
+        jq -r ".assets.[] | select(.content_type == $CONTENT_TYPE) | .browser_download_url"
+}
+
+function get_repo_name_from_url() {
+    grep -Po '(?<=github.com/)[[:alnum:]]+/[[:alnum:]]+' <<< "$1"
+}
+
+for repo in "$@"; do
+    get_urls "$(get_repo_name_from_url "$repo")"
+done
diff --git a/fdroid/scripts/get_gitlab_dl_links.sh b/fdroid/scripts/get_gitlab_dl_links.sh
new file mode 100755
index 0000000..62513c9
--- /dev/null
+++ b/fdroid/scripts/get_gitlab_dl_links.sh
@@ -0,0 +1,20 @@
+#!/bin/bash -e
+
+API='https://gitlab.com/api/v4'
+
+function get_urls() {
+    local repo="$1"
+
+    curl -L "$API/projects/$repo/releases" | \
+        jq -r '.[0].assets.links.[] | select(.name | test(".apk$")) | .url'
+}
+
+function get_repo_name_from_url() {
+    printf '%s' \
+        "$(grep -Po '(?<=gitlab.com/)[[:alnum:]]+/[[:alnum:]]+' <<< "$1")" | \
+        jq -sRr '@uri'
+}
+
+for repo in "$@"; do
+    get_urls "$(get_repo_name_from_url "$repo")"
+done