coolerdash.install


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_ensure_credentials() {
    if [ ! -f /var/lib/coolercontrol/plugins/coolerdash/credentials.json ]; then
        mkdir -p /var/lib/coolercontrol/plugins/coolerdash
        printf '{\n  "access_token": ""\n}\n' > /var/lib/coolercontrol/plugins/coolerdash/credentials.json
    fi
}

_set_permissions() {
    chmod 600 /var/lib/coolercontrol/plugins/coolerdash/config.json 2>/dev/null || true
    chmod 600 /var/lib/coolercontrol/plugins/coolerdash/credentials.json 2>/dev/null || true
}

_refresh_coolercontrol() {
    command -v systemctl >/dev/null 2>&1 || return 0

    systemctl daemon-reload
    systemctl reset-failed cc-plugin-coolerdash.service >/dev/null 2>&1 || true

    if systemctl list-unit-files cc-plugin-coolerdash.service | grep -q cc-plugin-coolerdash; then
        systemctl restart cc-plugin-coolerdash.service || echo "Note: Plugin restart failed."
    fi

    if systemctl list-unit-files coolercontrold.service | grep -q coolercontrold; then
        systemctl restart coolercontrold.service || echo "Note: CoolerControl restart failed."
    fi
}

_link_default_lcd_image() {
    mkdir -p /etc/coolercontrol
    if [ -f /var/lib/coolercontrol/plugins/coolerdash/coolerdash.png ]; then
        if [ -L /etc/coolercontrol/lcd_image.png ] || [ ! -e /etc/coolercontrol/lcd_image.png ]; then
            ln -sfn /var/lib/coolercontrol/plugins/coolerdash/coolerdash.png /etc/coolercontrol/lcd_image.png
        fi
    fi
}

post_install() {
    _ensure_credentials
    _link_default_lcd_image
    _set_permissions
    _refresh_coolercontrol

    echo "================================================================"
    echo "CoolerDash installed successfully."
    echo "Set your Access Token in the CoolerDash Settings UI."
    echo "The token is auto-persisted to credentials.json on startup."
    echo "================================================================"
}

post_upgrade() {
    _ensure_credentials
    _link_default_lcd_image
    _set_permissions
    _refresh_coolercontrol

    echo "================================================================"
    echo "CoolerDash upgraded successfully."
    echo "Note: config.json is preserved. If a new template was shipped,"
    echo "      compare it with /var/lib/coolercontrol/plugins/coolerdash/config.json.pacnew"
    echo "Note: credentials.json is never overwritten by updates."
    echo "================================================================"
}

pre_remove() {
    command -v systemctl >/dev/null 2>&1 || return 0

    if systemctl list-unit-files cc-plugin-coolerdash.service | grep -q cc-plugin-coolerdash; then
        systemctl stop cc-plugin-coolerdash.service
        systemctl disable cc-plugin-coolerdash.service
    fi

    systemctl daemon-reload
    if systemctl list-unit-files coolercontrold.service | grep -q coolercontrold; then
        systemctl restart coolercontrold.service || echo "Note: CoolerControl restart failed."
    fi

    echo "================================================================"
    echo "CoolerDash removed."
    echo "================================================================"
}