from invoke import task
from invoke import tasks
import os
from datetime import datetime as dt

IP=os.environ.get('LUANTI_IP')
USER=os.environ.get('LUANTI_USER')
HOME=os.environ.get('LUANTI_HOME')
LOCAL_HOME=os.environ.get('HOME')
TODAY = dt.now().strftime('%Y.%m.%d')

WORLD='world'  # World folder

USER_AT_IP=f'{USER}@{IP}'
SSH=f'ssh {USER}@{IP}'
SCP=f'scp {USER}@{IP}'
BACKUP_FILE=f'world.{TODAY}.tar'
LOCAL_BACKUPS=f'{LOCAL_HOME}/backup/luanti'

LUANTI=f'{HOME}/luanti'
MODS=f'{LUANTI}/mods'
SERVE=f'screen -d -m {LUANTI}/bin/luantiserver --gameid minetest --worldname world'

def browse(c, url):
    c.run(f"librewolf {url}")

@task
def list_mods(c):
    c.run(f'{SSH} -C ls {MODS}')

@task
def lookup_mod(c, mod):
    browse(c, f'https://content.luanti.org/packages/?q={mod}')

@task
def backup_mod(c, mod):
    c.run(f'mkdir -p {LOCAL_BACKUPS}/mods')
    tmpdir = '/tmp/mod_backups'
    c.run(f'{SSH} -C mkdir -p {tmpdir}')
    tarfile = f'{tmpdir}/{mod}.tar'
    c.run(f'{SSH} -C rm -f {tarfile} 2> /dev/null')
    c.run(f'{SSH} -C tar cf {tarfile} --directory {MODS} {mod}')
    c.run(f'{SCP}:{tarfile} {LOCAL_BACKUPS}/mods')
    c.run(f'ls -l {LOCAL_BACKUPS}/mods')
    c.run(f'tar --list -f {LOCAL_BACKUPS}/mods/{mod}.tar | tail')
    c.run(f'tar --list -f {LOCAL_BACKUPS}/mods/{mod}.tar | wc')

@task
def unpack_mod(c, mod):
    tarfile = f'{LOCAL_BACKUPS}/mods/{mod}.tar'
    unpack = f'{LOCAL_BACKUPS}/mods/unpack'
    c.run(f'mkdir -p {unpack}')
    c.run(f'cp {tarfile} {unpack}/')
    c.run(f'cd {unpack}; tar xf {unpack}/{mod}.tar')
    c.run(f'ls {unpack}')

updated_mods = f'{LOCAL_BACKUPS}/updated_mods'

@task
def repack_mod(c, mod):
    unpacked_mods = f'{LOCAL_BACKUPS}/mods/unpack/'
    tarfile = f'{updated_mods}/{mod}.tar'
    c.run(f'tar cf {tarfile} --directory={unpacked_mods} {mod}')
    c.run(f'mkdir -p {updated_mods}')
    c.run(f'ls -l {updated_mods}')
    c.run(f'tar --list -f {updated_mods}/{mod}.tar | tail')
    c.run(f'tar --list -f {updated_mods}/{mod}.tar | wc')

# @task(pre=[tasks.call(backup_mod, mod=mod)])
@task
def push_updated_mod(c, mod):
    tmpdir = '/tmp/updated_mods'
    c.run(f'{SSH} -C mkdir -p {tmpdir}')
    c.run(f'scp {updated_mods}/{mod}.tar {USER_AT_IP}:{tmpdir}')
    c.run(f'{SSH} -C ls -al {tmpdir}')
    c.run(f'{SSH} -C tar --list -f {tmpdir}/{mod}.tar')
    c.run(f'{SSH} -C mv {MODS}/{mod} /tmp/{mod}.{TODAY}.bk')
    c.run(f'{SSH} -C tar xf {tmpdir}/{mod}.tar --directory {MODS}')
    c.run(f'{SSH} -C ls -l {MODS}/{mod}')


@task
def compress(c):
    c.run(f'{SSH} -C tar cf {HOME}/{BACKUP_FILE} --directory={HOME} {WORLD}')

@task(compress)
def backup(c):
    stopped = input("Is the server stopped?")
    if(stopped != 'y'):
        print("so go stop the server...")
        exit()
    print(f'Backup {HOME}/{BACKUP_FILE} to {LOCAL_BACKUPS}')
    c.run(f'mkdir -p {LOCAL_BACKUPS}')
    c.run(f'{SCP}:{BACKUP_FILE} {LOCAL_BACKUPS}')
    print(f'Backedup up {BACKUP_FILE} to {LOCAL_BACKUPS}')
    c.run(f'ls {LOCAL_BACKUPS} | grep world')
    c.run(f'tar tvf {LOCAL_BACKUPS}/{BACKUP_FILE}')


@task
def cli_hint(c):
    browse(c, 'https://console.kamatera.com/cli')

@task
def cheat_sheets(c):
    browse(c, 'https://edward.delaporte.us/blog/luanti/')

@task
def verify_backup(c):
    TAR_FILE=f'{LOCAL_BACKUPS}/{BACKUP_FILE}'
    DB_FILE='map.sqlite'
    print(f'Extracting {DB_FILE} from {TAR_FILE}')
    c.run(f'cd /tmp;tar --extract --file={LOCAL_BACKUPS}/{BACKUP_FILE} {WORLD}/{DB_FILE}')
    result = c.run(f'echo "PRAGMA quick_check;" | sqlite3 /tmp/{DB_FILE}')
    # print(f'Check on {DB_FILE}: {result}')
    # print(f'Exit code: {result.exited}')

    if(not 'ok' in result.stdout):
        print("=========================================")
        print("database is corrupt, restore from backup!")
        print("=========================================")


@task(verify_backup)
def serve(c):
    print(f"Attempting to connect to {IP}")
    result = c.run(f'ssh {USER}@{IP} -C {SERVE}')
    print(f'Server should now be running in a remote screen session.')
    print(result)