#!/bin/bash

# Reconcile ONLY the LibrePortal control plane ownership for the current Docker
# mode, so the CLI and the de-sudo helpers (runFileOp/runInstallOp) keep working
# after a rooted<->rootless switch:
#   rooted   -> root:root        (CLI operates via sudo)
#   rootless -> $sudo_user_name  (the manager/runtime user owns its own files)
#
# Scope is DELIBERATELY narrow — the de-sudo-critical, LibrePortal-owned files
# only: configs/, logs/, install scripts, the apps DB, and the /docker top level
# (kept o+x so the docker user can still traverse to its container dirs).
#
# It does NOT touch /docker/containers/** (per-app data, written by per-app
# container UIDs — uid-mapped through subuids in rootless), nor backups/ (owned
# by the backup-engine user), nor ssl/ssh (key material). A blanket chown there
# would break permission-strict apps (Postgres/MySQL refuse a wrong-owned data
# dir; Grafana/Nextcloud run as fixed UIDs) AND can't survive the rootless
# subuid offset anyway. Moving a stateful app across modes is a backup->switch
# ->restore operation, not a chown. Must run as ROOT, apps stopped. Idempotent.
reconcileDockerOwnership()
{
    local mode="${1:-$CFG_DOCKER_INSTALL_TYPE}"
    [[ -d "$docker_dir" ]] || return 0

    # The control plane is owned by the MANAGER user in BOTH modes. root:root was
    # never the intended model — it only ever showed up as an artifact of
    # un-de-sudo'd commands (sudo creating files as root instead of libreportal).
    # Robust resolution — these globals aren't always populated in the CLI/switch
    # context, which previously made ops silently no-op (relative paths / empty
    # user). Fall back to absolute defaults and the live config file; never empty.
    local owner="${sudo_user_name:-libreportal}"
    local ddir="${docker_dir:-/docker}"
    local cdir="${containers_dir:-$ddir/containers/}"
    local cfgdir="${configs_dir:-$ddir/configs/}"
    local logdir="${logs_dir:-$ddir/logs/}"
    local scrdir="${script_dir:-$ddir/install}"
    local dbpath="$ddir/${db_file:-database.db}"
    # Read the rootless docker install user AUTHORITATIVELY from config — NOT the
    # lowercase $docker_install_user global, which check_install_type.sh sets to
    # the MANAGER user in rooted mode, so during a rooted->rootless switch it's
    # stale (=manager) and would mis-own the WebUI dir.
    local appusr
    appusr=$(grep -h '^CFG_DOCKER_INSTALL_USER=' "$cfgdir/general/general_docker_install" 2>/dev/null | head -1 | cut -d= -f2 | awk '{print $1}')
    appusr="${appusr:-${CFG_DOCKER_INSTALL_USER:-dockerinstall}}"

    [[ -d "$ddir" ]] || return 0

    # Swap ONLY the owner on our own control-plane files; never reset mode bits.
    # The only two bits we *add* (never remove) are structural: o+x on /docker so
    # the docker user can traverse to its container dirs, and o+r on the DB so the
    # WebUI container can read it.
    runSystem chown "$owner:$owner" "$ddir"
    runSystem chmod o+x "$ddir"
    local p
    for p in "$cfgdir" "$logdir" "$scrdir" "$dbpath"; do
        [[ -e "$p" ]] && runSystem chown -R "$owner:$owner" "$p"
    done
    [[ -f "$dbpath" ]] && runSystem chmod o+r "$dbpath"

    # LibrePortal's OWN WebUI container dir is regenerable, so flip it to the
    # mode's container owner so the WebUI survives a switch (safe to recurse —
    # one UID, no per-app uid to clobber). Third-party app data is left untouched.
    reconcileWebuiDirOwnership "$mode"

    isSuccessful "Reconciled ownership for $mode"
}

# Chown LibrePortal's own (regenerable) WebUI container dir to the mode's
# CONTAINER owner, so both the WebUI container and the host-side runFileOp
# generators — which run as that user — can write it:
#   rooted   -> the manager ($sudo_user_name)
#   rootless -> the docker install user, read authoritatively from config (the
#               $docker_install_user global is the manager in rooted and so goes
#               stale across a switch).
# Recurses (one regenerable UID, no per-app uid to clobber). Must run as root
# (runSystem stays root in both modes). Shared by the switch reconcile and the
# fresh-install WebUI setup so a fresh install gets the same ownership a switch
# does — otherwise rootless generators hit "Permission denied" on a
# manager-owned frontend/data tree.
reconcileWebuiDirOwnership()
{
    local mode="${1:-$CFG_DOCKER_INSTALL_TYPE}"
    local cdir="${containers_dir:-${docker_dir:-/docker}/containers/}"
    local cfgdir="${configs_dir:-${docker_dir:-/docker}/configs/}"
    local webui_dir="${cdir}libreportal"
    if [[ ! -d "$webui_dir" ]]; then
        isNotice "reconcileWebuiDirOwnership: WebUI dir '$webui_dir' not found — skipped"
        return 0
    fi

    local app_owner="${sudo_user_name:-libreportal}"
    if [[ "$mode" == "rootless" ]]; then
        local appusr
        appusr=$(grep -h '^CFG_DOCKER_INSTALL_USER=' "$cfgdir/general/general_docker_install" 2>/dev/null | head -1 | cut -d= -f2 | awk '{print $1}')
        app_owner="${appusr:-${CFG_DOCKER_INSTALL_USER:-dockerinstall}}"
    fi

    runSystem chown -R "$app_owner:$app_owner" "$webui_dir"
    isSuccessful "Reconciled WebUI dir ($webui_dir) -> $app_owner"
}

fixFolderPermissions()
{
    local silent_flag="$1"
    local app_name="$2"

    local result=$(runSystem chmod +x "$docker_dir" > /dev/null 2>&1)
    if [ "$silent_flag" == "loud" ]; then
        checkSuccess "Updating $docker_dir with execute permissions."
    fi

    local result=$(runSystem chmod +x "$containers_dir" > /dev/null 2>&1)
    if [ "$silent_flag" == "loud" ]; then
        checkSuccess "Updating $containers_dir with execute permissions."
    fi
    
    local result=$(runSystem find "$script_dir" "$ssl_dir" "$ssh_dir" "$backup_dir" "$restore_dir" "$migrate_dir" -maxdepth 2 -type d -exec chmod +x {} \;)
    if [ "$silent_flag" == "loud" ]; then
        checkSuccess "Adding execute permissions for $docker_install_user user"
    fi

    # Install user related
    local result=$(runSystem chown $docker_install_user:$docker_install_user "$containers_dir" > /dev/null 2>&1)
    if [ "$silent_flag" == "loud" ]; then
        checkSuccess "Updating $containers_dir with $docker_install_user ownership"
    fi
}