#!/usr/bin/env python3
# Export all SMS from the SQLite database of the com.android.messaging
# app as simple plaintext sorted by conversation to stdout.
#
# Usage instructions for LineageOS 14.1 (tested on OnePlus X [onyx]):
# 1. Enable USB debugging in the developer options
# 2. Allow root access from ADB in the developer options
# 3. Connect the device and restart the adb daemon in root mode:
#    $ adb root
# 4. Pull the corresponding database file:
#    $ adb pull /data/data/com.android.messaging/databases/bugle_db .
# 5. Pass the name of the database file to this script:
#    $ ./{this_script} bugle_db

import os
import sys
import sqlite3
from datetime import datetime

# Default
date_format_string = "%Y-%m-%d %H:%M:%S"

# German version
# date_format_string = "am %d.%m.%Y um %H:%M:%S"

if len(sys.argv) < 2:
	exit("Usage: {} database_file > formatted.txt".format(sys.argv[0]))

if not os.path.isfile(sys.argv[1]):
	exit("Could not open file {}".format(sys.argv[1]))

# Establish connection to local SQLite database
connection = sqlite3.connect(sys.argv[1])

# Get a cursor to the SQLite database connection
c = connection.cursor();

c.execute("SELECT conversations._id, conversations.name, conversations.participant_normalized_destination \
	FROM conversations WHERE latest_message_id NOT NULL ORDER BY name")

for conversation in c.fetchall():
	data_id = conversation[0]
	data_name = conversation[1]
	data_dest = conversation[2]

	print("==================================================")
	print("{} [{}]".format(data_name, data_dest))
	print("==================================================")

	c.execute("SELECT messages._id, parts.text, parts.timestamp, participants.sim_slot_id FROM messages \
		LEFT JOIN parts ON messages._id = parts.message_id LEFT JOIN participants ON messages.sender_id = participants._id \
		WHERE messages.conversation_id = ? ORDER BY parts.timestamp", (data_id,))

	for result in c.fetchall():
		msg_id = result[0]
		msg_text = result[1]
		msg_time = result[2]

		# Remove the last 3 digits (milliseconds) from timestamp
		msg_time = int(str(msg_time)[:-3])
		msg_time_formatted = datetime.fromtimestamp(msg_time).strftime(date_format_string)

		sim_slot_id = result[3]

		# A sim_slot_id equal to 0 indicates that the SMS was sent from the device
		if sim_slot_id == 0:
			msg_direction = "===>"
		else:
			msg_direction = "<---"

		print("[{} {}]:\n{}\n".format(msg_time_formatted, msg_direction, msg_text))