import os
import sys
import subprocess
import tempfile
import zipfile
from pathlib import Path

import bpy
from bpy.types import Operator
from bpy_extras.io_utils import ExportHelper

from blender_asset_tracer.pack import zipped


class ExportBatPack(Operator, ExportHelper):
    bl_idname = "export_bat.pack"
    bl_label = "BAT - Zip pack (flat)"
    filename_ext = ".zip"

    @classmethod
    def poll(cls, context):
        return bpy.data.is_saved

    def execute(self, context):
        outfname = bpy.path.ensure_ext(self.filepath, ".zip")
        self.report({"INFO"}, "Executing ZipPacker ...")

        with zipped.ZipPacker(
            Path(bpy.data.filepath),
            Path(bpy.data.filepath).parent,
            str(self.filepath),
        ) as packer:
            packer.strategise()
            packer.execute()
        self.report({"INFO"}, "Packing successful!")

        with zipfile.ZipFile(str(self.filepath)) as inzip:
            inzip.testzip()

        self.report({"INFO"}, "Written to %s" % outfname)
        return {"FINISHED"}


def open_folder(folderpath):
    """Open the folder at the path given with cmd relative to user's OS."""
    from shutil import which

    my_os = sys.platform
    if my_os.startswith(("linux", "freebsd")):
        cmd = "xdg-open"
    elif my_os.startswith("win"):
        cmd = "explorer"
        if not folderpath:
            return
    else:
        cmd = "open"

    if not folderpath:
        return

    folderpath = str(folderpath)
    if os.path.isfile(folderpath):
        select = False
        if my_os.startswith("win"):
            cmd = "explorer /select,"
            select = True
        elif my_os.startswith(("linux", "freebsd")):
            if which("nemo"):
                cmd = "nemo --no-desktop"
                select = True
            elif which("nautilus"):
                cmd = "nautilus --no-desktop"
                select = True
        if not select:
            folderpath = os.path.dirname(folderpath)

    folderpath = os.path.normpath(folderpath)
    fullcmd = cmd.split() + [folderpath]
    subprocess.Popen(fullcmd)


class BAT_OT_export_zip(Operator, ExportHelper):
    """Export current blendfile with hierarchy preservation"""

    bl_label = "BAT - Zip pack (keep hierarchy)"
    bl_idname = "bat.export_zip"

    filename_ext = ".zip"

    root_dir: bpy.props.StringProperty(
        name="Root",
        description="Top Level Folder of your project."
        "\nFor now Copy/Paste correct folder by hand if default is incorrect."
        "\n!!! Everything outside won't be zipped !!!",
    )

    use_zip: bpy.props.BoolProperty(
        name="Output as ZIP",
        description="If enabled, pack into a ZIP archive. If disabled, copy to a directory.",
        default=True,
    )

    @classmethod
    def poll(cls, context):
        return bpy.data.is_saved

    def execute(self, context):
        from blender_asset_tracer.pack import Packer
        from blender_asset_tracer.pack.zipped import ZipPacker

        bfile = Path(bpy.data.filepath)
        project = Path(self.root_dir) if self.root_dir else bfile.parent
        target = str(self.filepath)

        if self.use_zip:
            target = bpy.path.ensure_ext(target, ".zip")
            packer_cls = ZipPacker
        else:
            if target.lower().endswith(".zip"):
                target = target[:-4]
            packer_cls = Packer

        self.report({"INFO"}, "Packing with hierarchy...")

        with packer_cls(bfile, project, target, keep_hierarchy=True) as packer:
            packer.strategise()
            packer.execute()

        if self.use_zip:
            with zipfile.ZipFile(target) as inzip:
                inzip.testzip()
            log_output = Path(tempfile.gettempdir(), "README.txt")
            with open(log_output, "w") as log:
                log.write("Packed with BAT (keep-hierarchy mode)")
                log.write(f"\nBlend file: {bpy.data.filepath}")
            with zipfile.ZipFile(target, "a") as zipObj:
                zipObj.write(log_output, log_output.name)

        self.report({"INFO"}, "Written to %s" % target)
        open_folder(Path(target).parent)
        return {"FINISHED"}


def menu_func(self, context):
    layout = self.layout
    layout.separator()
    layout.operator(ExportBatPack.bl_idname)
    filepath = layout.operator(BAT_OT_export_zip.bl_idname)

    try:
        prefs = bpy.context.preferences.addons["blender_asset_tracer"].preferences
        root_dir_env = None
        if prefs.use_env_root:
            root_dir_env = os.getenv("ZIP_ROOT")
            if not root_dir_env:
                root_dir_env = os.getenv("PROJECT_ROOT")
            if not root_dir_env:
                root_dir_env = prefs.root_default
        filepath.root_dir = "" if root_dir_env is None else root_dir_env
    except Exception:
        filepath.root_dir = os.getenv("ZIP_ROOT") or os.getenv("PROJECT_ROOT") or ""