[Unit]
Description=Redis Cache for Nextcloud
Documentation=https://hub.docker.com/_/redis/
After=network.target 

# Only start if Nextcloud has been configured
ConditionPathExists=/etc/quadlets/nextcloud/config.env

# Start/stop this unit when the target is started/stopped
PartOf=nextcloud.target

[Container]
ContainerName=nextcloud-redis
Image=docker.io/library/redis:${REDIS_MAJOR}-alpine

# Network configuration
Network=host

# Redis configuration with authentication
Exec=redis-server /usr/local/etc/redis/redis.conf

# No need for root privileges
User=redis
Group=redis

# UID/GID mapping to map the redis (999) user / redis (1000) group inside the container to arbitrary user 10008 / group 10000 on the host
UIDMap=0:1000000:999
UIDMap=999:10008:1
UIDMap=1000:1001000:64536
GIDMap=0:1000000:1000
GIDMap=1000:10000:1
GIDMap=1001:1001001:64535

# Environment variables
Environment=REDISCLI_AUTH=${REDIS_HOST_PASSWORD}

# Volume mounts for data persistence
Volume=/var/lib/quadlets/nextcloud/redis:/data:Z
Volume=/etc/quadlets/nextcloud/redis.conf:/usr/local/etc/redis/redis.conf:ro

# Health check
HealthCmd=redis-cli -t 5 ping | grep -qFx PONG
HealthInterval=30s
HealthTimeout=5s
HealthStartPeriod=10s
HealthRetries=3

[Service]
Restart=always
RestartSec=5
TimeoutStartSec=300
TimeoutStopSec=30

# These environment variables are sourced to be used by systemd in the Exec* commands
EnvironmentFile=/etc/quadlets/nextcloud/config.env

[Install]
WantedBy=nextcloud.target