#!/usr/bin/env bash
# SPDX-FileCopyrightText: Daniel Pätzold
# SPDX-License-Identifier: AGPL-3.0-or-later
#
# This Script
#    Takes three args: WALLET_NAME, WALLET_PASSWORD, OPTIONAL_FILE_PATH
#    Creates the wallet via qdbus (works without kwalletcli)
#    If OPTIONAL_FILE_PATH is provided, creates the .kwl there and bind-mounts it to ~/.local/share/kwalletd5/.kwl so kwalletd5 reads/writes that file
#    Avoids leaving the password exposed by using a file descriptor for qdbus where possible (note: qdbus API here still passes password argument)
#eg run: ./create-kwallet-file.sh MyWallet "MyPass" /home/user/.my_kwallet/kwallet5.kwl
#
set -euo pipefail

WALLET_NAME="${1:-}"
WALLET_PASSWORD="${2:-}"
TARGET_PATH="${3:-}"

if [ -z "$WALLET_NAME" ] || [ -z "$WALLET_PASSWORD" ]; then
  echo "Usage: $0 <wallet-name> <wallet-password> [target-file-path]"
  exit 2
fi

# Ensure kwalletd6 is running
if ! pgrep -x kwalletd6 >/dev/null 2>&1; then
  nohup kwalletd6 >/dev/null 2>&1 &
  sleep 1
fi

# Use qdbus to create the wallet
if ! command -v qdbus-qt6 >/dev/null 2>&1; then
  echo "qdbus required"
  exit 3
fi

SERVICE="org.kde.kwalletd"
PATH_DBUS="/modules/kwalletd6"
APPID="create-kwallet-script-$$"

HANDLE=$(qdbus-qt6 "$SERVICE" "$PATH_DBUS" org.kde.KWallet.open "$APPID" 0) || true
# createWallet(walletName, password, winId)
qdbus-qt6 "$SERVICE" "$PATH_DBUS" org.kde.KWallet.createWallet "$WALLET_NAME" "$WALLET_PASSWORD" 0

echo "Not working until now, need to go further into things..."
exit 0

# Set default wallet in kwalletrc
kwallet_cfg="$HOME/.config/kwalletrc"
mkdir -p "$(dirname "$kwallet_cfg")"
# Simple write/replace of DefaultWallet in [KDE Wallet]
if ! grep -q "^\[KDE Wallet\]" "$kwallet_cfg" 2>/dev/null; then
  printf "[KDE Wallet]\nDefaultWallet = %s\n" "$WALLET_NAME" >> "$kwallet_cfg"
else
  if grep -q "^\[KDE Wallet\]" "$kwallet_cfg" && grep -q "^DefaultWallet" "$kwallet_cfg"; then
    sed -i "s/^DefaultWallet.*/DefaultWallet = $WALLET_NAME/" "$kwallet_cfg"
  else
    awk -v w="$WALLET_NAME" 'BEGIN{p=1} /^\[KDE Wallet\]/{print; print "DefaultWallet = " w; p=0; next} {print}' "$kwallet_cfg" > "$kwallet_cfg.tmp" && mv "$kwallet_cfg.tmp" "$kwallet_cfg"
  fi
fi

# If a target file was given, arrange for kwalletd5 to use it
if [ -n "$TARGET_PATH" ]; then
  TARGET_DIR="$(dirname "$TARGET_PATH")"
  mkdir -p "$TARGET_DIR"
  touch "$TARGET_PATH"
  chmod 600 "$TARGET_PATH"
  chown "$(id -u):$(id -g)" "$TARGET_PATH"

  KW_DIR="$HOME/.local/share/kwalletd6"
  KW_FILE_NAME="$(basename "$TARGET_PATH")"
  mkdir -p "$KW_DIR"

  # Stop kwalletd5 before moving / mounting
  pkill kwalletd6 || true
  sleep 0.5

  # Backup existing kwallet dir
  if [ -e "$KW_DIR" ] && [ ! -L "$KW_DIR" ]; then
    mv "$KW_DIR" "${KW_DIR}.bak" || true
  fi
  mkdir -p "$KW_DIR"

  # If target is a directory path that contains a .kwl name, use that name; else use wallet name
  if [[ "$KW_FILE_NAME" != *.kwl ]]; then
    KW_FILE_NAME="${WALLET_NAME}.kwl"
    TARGET_PATH="${TARGET_DIR}/${KW_FILE_NAME}"
    touch "$TARGET_PATH"
    chmod 600 "$TARGET_PATH"
  fi

  # Ensure target file exists
  touch "$TARGET_PATH"
  chmod 600 "$TARGET_PATH"

  # Mount --bind the target file into kwalletd5 dir with the expected name
  MOUNT_POINT="${KW_DIR}/${KW_FILE_NAME}"
  mkdir -p "$(dirname "$MOUNT_POINT")"
  # create placeholder if missing
  touch "$MOUNT_POINT"
  sudo mount --bind "$TARGET_PATH" "$MOUNT_POINT"

  # Restart kwalletd5
  nohup kwalletd6 &
  sleep 1
fi

echo "Created wallet '$WALLET_NAME'."
if [ -n "$TARGET_PATH" ]; then
  echo "Wallet file bound to: $TARGET_PATH"
fi