#!/bin/bash

# Force-recreates every installed app whose `CFG_<APP>_NETWORK=gluetun`
# so they re-resolve `network_mode: container:gluetun-service` against
# the *current* gluetun container ID.
#
# Background: Docker resolves `container:<name>` once at start time. If
# gluetun is later recreated (port-forward change, version bump, manual
# `docker compose up`), every routed app keeps the *old* container ID
# embedded in its NetworkMode and ends up in its own private netns —
# the host port mapping silently stops reaching anything because the
# app's HTTP server is no longer in gluetun's namespace.
#
# Call this whenever you've just touched gluetun in a way that recreates
# its container — see appNetworkRegisterPorts_gluetun and the gluetun
# install lifecycle for the two existing wiring sites.
appGluetunRecreateRouted()
{
    if ! command -v sqlite3 >/dev/null 2>&1; then
        return 0
    fi
    if [[ ! -f "$docker_dir/$db_file" ]]; then
        return 0
    fi

    local installed_apps
    installed_apps=$(runInstallOp sqlite3 "$docker_dir/$db_file" \
        "SELECT name FROM apps WHERE status = 1 ORDER BY name;" 2>/dev/null)

    if ! runFileOp docker ps --format '{{.Names}}' 2>/dev/null | grep -q '^gluetun-service$'; then
        # Nothing to re-attach against; gluetun isn't running.
        return 0
    fi

    local recreated=0
    while IFS= read -r app; do
        [[ -z "$app" || "$app" == "gluetun" ]] && continue
        local app_config_file="${containers_dir}${app}/${app}.config"
        [[ -f "$app_config_file" ]] || continue

        local net
        net=$(grep -E "^CFG_${app^^}_NETWORK=" "$app_config_file" 2>/dev/null \
            | cut -d'=' -f2 | tr -d '"')
        [[ "$net" != "gluetun" ]] && continue

        local app_compose="${containers_dir}${app}/docker-compose.yml"
        [[ -f "$app_compose" ]] || continue

        # Skip apps with no running/created container — recreate would
        # do nothing useful and we'd just emit noise.
        if ! runFileOp docker ps -a --format '{{.Names}}' 2>/dev/null \
            | grep -q "^${app}-service$"; then
            continue
        fi

        isNotice "Re-attaching ${app} to gluetun's namespace (force-recreate)..."
        dockerCommandRun "cd ${containers_dir}${app} && docker compose up -d --force-recreate ${app}-service" >/dev/null 2>&1 || true
        ((recreated++))
    done <<< "$installed_apps"

    if (( recreated > 0 )); then
        isSuccessful "Re-attached ${recreated} gluetun-routed app(s) to the new gluetun namespace."
    fi
}