#!/usr/bin/python
import os, shutil, time
from datetime import datetime

source_chroot_dir = os.getenv('SOURCE_CHROOT_DIR')
chroot_dir = os.getenv('CHROOT_DIR')
cdroot_dir = os.getenv('CDROOT_DIR')
boot_dir = os.path.join(chroot_dir, "boot")
cdroot_boot_dir = os.path.join(cdroot_dir, "boot")

boot_kernel = [x for x in os.listdir(boot_dir) if x.startswith("kernel-")]
if boot_kernel:
    boot_kernel = os.path.join(boot_dir, sorted(boot_kernel)[0])
    shutil.copy2(boot_kernel, os.path.join(cdroot_boot_dir, "sabayon"))

boot_ramfs = [x for x in os.listdir(boot_dir) if x.startswith("initramfs-")]
if boot_ramfs:
    boot_ramfs = os.path.join(boot_dir, sorted(boot_ramfs)[0])
    shutil.copy2(boot_ramfs, os.path.join(cdroot_boot_dir, "sabayon.igz"))


# Write build info
build_info_file = os.path.join(cdroot_dir, "BUILD_INFO")
build_date = str(datetime.fromtimestamp(time.time()))
bf = open(build_info_file, "w")
bf.write("Sabayon ISO image build information\n")
bf.write("Built on: %s\n" % (build_date,))
bf.flush()
bf.close()

def replace_version(path):
    release_version = os.getenv("RELEASE_VERSION", "HEAD")
    cf = open(path, "r")
    new_cf = []
    for line in cf.readlines():
        line = line.replace("__VERSION__", release_version)
        new_cf.append(line)
    cf.close()
    cf_new = open(path+".cdroot", "w")
    cf_new.writelines(new_cf)
    cf_new.flush()
    cf_new.close()
    os.rename(path+".cdroot", path)

# Change txt.cfg and isolinux.txt to match version
isolinux_cfg = os.path.join(cdroot_dir, "isolinux/txt.cfg")
isolinux_txt = os.path.join(cdroot_dir, "isolinux/isolinux.txt")
replace_version(isolinux_cfg)
replace_version(isolinux_txt)

# Copy pkglist over, if exists
sabayon_pkgs_file = os.path.join(chroot_dir, "etc/sabayon-pkglist")
if os.path.isfile(sabayon_pkgs_file):
    shutil.copy2(sabayon_pkgs_file, os.path.join(cdroot_dir, "pkglist"))
    iso_path = os.getenv("ISO_PATH")
    if iso_path:
        shutil.copy2(sabayon_pkgs_file, iso_path+".pkglist")