from fabric.api import task, run, local, env, cd, put, prefix, sudo
from fabric.colors import green
from fabric.contrib.project import rsync_project
from mercurial import commands, ui, hg, cmdutil
import imp
import os, os.path
import shutil
import sys

import config

def get_export_path(version):
    base_path = os.path.join(env.base_export_path,env.export_prefix).lstrip("/")
    return os.path.expanduser(base_path) + "_%s" % (str(version))

def clean_export_folder(path):
    print("Removing %s" % path)
    if os.path.isdir(path):
        shutil.rmtree(path, ignore_errors=True)

def do_export_version(path, version):
    print("Export version %s"%str(version))
    
    #hgui = ui.ui() 
    #repo = hg.repository(hgui, cmdutil.findrepo(os.getcwd()))
    #commands.archive(hgui, repo, path, rev=str(version))
    
    local("hg archive -r \'%s\' \"%s\"" % (str(version),path))
    print("Export version %s done"%str(version))
    
def rsync_export(path, remotepath, filters):
    print("Rsync %s to %s",(path,remotepath))
    
    if filters:
        filter_option_str = " ".join(["--filter \"%s\"" % (f) for f in filters])
    else:
        filter_option_str =""
    
    run("mkdir -p \"%s\"" % remotepath)
    rsync_project(remotepath, local_dir=path, extra_opts=filter_option_str, delete=True)
    print("Rsync %s to %s done",(path,remotepath))
    
def clean_rsync_folder(remotepath):
    print("clean rsync folder %s" % remotepath)
    run("rm -fr \"%s\"" % remotepath)
    
def build_src(path):
    print("Build source dist at %s" % path)
    f = None
    try:
        f, pathname, description = imp.find_module("setup", [path])
        print(" 2 Build source dist at %s" % path)
        setup_mod = imp.load_module("setup", f, pathname, description)
        print(" 3 Build source dist at %s" % path)
    finally:
        if f:
            f.close()
        
    setup_mod.launch_setup("setup.py", ['sdist'])
    
    print("Build source dist at %s done" % path)
    

def get_src_version(path):
    print("get src version at %s" % path)
    f = None
    try:
        f, pathname, description = imp.find_module("ldt", [path])
        ldt_mod = imp.load_module("ldt", f, pathname, description)
    finally:
        if f:
            f.close()
    version = ldt_mod.VERSION
    version_str = ldt_mod.get_version()
    
    return (version, version_str) 
    

def sync_build(path):
    print("Sync build %s" % path)
    with cd(env.remote_ldt_base_path):
        filename = os.path.basename(path)
        res_trans = put(path, os.path.join(env.remote_ldt_base_path, filename))
        print("Sync build %s to %s" % (path,repr(res_trans)))
        return res_trans

def remove_build(path):
    print("remove build build %s" % path)
    run("rm \"%s\"" % path)
        

def install_build(remotepath, remotevirtualenvpath):
    print("Install build %s in %s" % (remotepath, remotevirtualenvpath))
    activate_path = os.path.join(remotevirtualenvpath, "bin/activate")
    
    with prefix("source %s" % activate_path):
        run("pip install \"%s\"" % remotepath)

def collectstatic(remotepath, remotevirtualenvpath):
    print("Collect static in %s with %s" % (remotepath, remotevirtualenvpath))
    activate_path = os.path.join(remotevirtualenvpath, "bin/activate")
    with prefix("source \"%s\"" % activate_path), prefix("export PYTHONPATH=\"%s\"" % remotepath), cd(remotepath):
        run("python manage.py collectstatic --noinput")
        
        

def export_version(version):
    print("export version %s" % str(version))
    
    export_path = get_export_path(version)
    
    clean_export_folder(export_path)
    do_export_version(export_path,version)
    
    return export_path

def do_create_virtualenv(remote_venv_export_path, remotevirtualenvpath):
    print("Create virtualenv export_path : %s - remote venvpath : %s" % (remote_venv_export_path, remotevirtualenvpath))
    activate_path = os.path.join(remotevirtualenvpath, "bin/activate")
    if "remote_baseline_venv" in env and env.remote_baseline_venv:
        prefix_str = "source \"%s\"" % os.path.join(env.remote_baseline_venv, "bin/activate")
    else:
        prefix_str = "echo"
    run("mkdir -p \"%s\"" % remotevirtualenvpath)
    with prefix(prefix_str), cd(os.path.join(remote_venv_export_path,"virtualenv","web")):
        run("python create_python_env.py")
        run("python project-boot.py --unzip-setuptools --no-site-packages --clear --type-install=local \"%s\"" % remotevirtualenvpath)
    with prefix("source \"%s\"" % activate_path):
        run("pip install -r \"%s\"" % os.path.join(remote_venv_export_path,"virtualenv","web","res","srvr_requirements.txt"))

def do_sync_ldt(version, export_path):
    print("do_sync_ldt with version %s and path %s" % (version,export_path))
    src_path = export_path + "/src/ldt"
    build_src(src_path)
    (_,version_str) = get_src_version(src_path)
    build_path = os.path.join(src_path,"dist","ldt-%s.tar.gz" % version_str)
    res_trans = None
    try:
        res_trans = sync_build(build_path)
        install_build(res_trans[0], env.remote_virtualenv_path)        
    finally:
        if res_trans:
            remove_build(res_trans[0])

def do_sync_web(version, export_path):
    print("do_sync_web with version %s and path %s" % (version,export_path))
    web_path = os.path.join(export_path,"web/") 
    rsync_export(web_path, env.remote_web_path, env.web_rsync_filters)    

def relaunch_server():
    print("Relaunch server")
    collectstatic(env.remote_web_path, env.remote_virtualenv_path)
    sudo(env.web_relaunch_cmd, shell=False)

@task
def sync_web(version):
    print(green("sync web with version %s" % version))
    export_path = export_version(version)
    do_sync_web(version, export_path)    
    clean_export_folder(export_path)
    relaunch_server()

@task
def sync_ldt(version):
    print(green("sync ldt with version %s" % version))
    export_path = export_version(version)
    do_sync_ldt(version, export_path)
    clean_export_folder(export_path)
    relaunch_server()    

@task
def sync_platform(version):
    print(green("sync platform with version %s" % version))
    export_path = export_version(version)
    do_sync_ldt(version, export_path)
    do_sync_web(version, export_path)
    clean_export_folder(export_path)
    relaunch_server()

@task
def create_virtualenv(version):
    print(green("create virtualenv with version %s" % version))
    export_path = export_version(version)
    venv_remote_export_path = ""
    try:
        virtualenv_path = os.path.join(export_path, "virtualenv")
    
        venv_remote_export_path = os.path.join(env.remote_venv_export_path, env.export_prefix, version,"virtualenv")
        rsync_export(virtualenv_path, venv_remote_export_path, env.venv_rsync_filters)
        do_create_virtualenv(venv_remote_export_path, env.remote_virtualenv_path)
    finally:
        clean_export_folder(export_path)
        if venv_remote_export_path:
            clean_rsync_folder(venv_remote_export_path)