#! /usr/bin/env python3
import argparse
import io
import json
import os
import os.path
import sys
import textwrap
from PIL import Image, ImageDraw  # type: ignore
from typing import Any, Dict

from bemani.format.afp import TXP2File, Shape, SWF, AFPRenderer
from bemani.format import IFS


def main() -> int:
    parser = argparse.ArgumentParser(description="Konami AFP graphic file unpacker/repacker")
    subparsers = parser.add_subparsers(help='Action to take', dest='action')

    extract_parser = subparsers.add_parser('extract', help='Extract relevant textures from TXP2 container')
    extract_parser.add_argument(
        "file",
        metavar="FILE",
        help="The file to extract",
    )
    extract_parser.add_argument(
        "dir",
        metavar="DIR",
        help="Directory to extract to",
    )
    extract_parser.add_argument(
        "-p",
        "--pretend",
        action="store_true",
        help="Pretend to extract instead of extracting",
    )
    extract_parser.add_argument(
        "-v",
        "--verbose",
        action="store_true",
        help="Display verbuse debugging output",
    )
    extract_parser.add_argument(
        "-r",
        "--write-raw",
        action="store_true",
        help="Always write raw texture files",
    )
    extract_parser.add_argument(
        "-m",
        "--write-mappings",
        action="store_true",
        help="Write mapping files to disk",
    )
    extract_parser.add_argument(
        "-g",
        "--generate-mapping-overlays",
        action="store_true",
        help="Generate overlay images showing mappings",
    )
    extract_parser.add_argument(
        "-s",
        "--split-textures",
        action="store_true",
        help="Split textures into individual sprites",
    )
    extract_parser.add_argument(
        "-b",
        "--write-binaries",
        action="store_true",
        help="Write binary SWF files to disk",
    )

    update_parser = subparsers.add_parser('update', help='Update relevant textures in a TXP2 container from a directory')
    update_parser.add_argument(
        "file",
        metavar="FILE",
        help="The file to update",
    )
    update_parser.add_argument(
        "dir",
        metavar="DIR",
        help="Directory to update from",
    )
    update_parser.add_argument(
        "-p",
        "--pretend",
        action="store_true",
        help="Pretend to update instead of updating",
    )
    update_parser.add_argument(
        "-v",
        "--verbose",
        action="store_true",
        help="Display verbuse debugging output",
    )

    print_parser = subparsers.add_parser('print', help='Print the TXP2 container contents as a JSON dictionary')
    print_parser.add_argument(
        "file",
        metavar="FILE",
        help="The file to print",
    )
    print_parser.add_argument(
        "-v",
        "--verbose",
        action="store_true",
        help="Display verbuse debugging output",
    )

    parseafp_parser = subparsers.add_parser('parseafp', help='Parse a raw AFP/BSI file pair previously extracted from an IFS or TXP2 container')
    parseafp_parser.add_argument(
        "afp",
        metavar="AFPFILE",
        help="The AFP file to parse",
    )
    parseafp_parser.add_argument(
        "bsi",
        metavar="BSIFILE",
        help="The BSI file to parse",
    )
    parseafp_parser.add_argument(
        "-v",
        "--verbose",
        action="store_true",
        help="Display verbuse debugging output",
    )

    parsegeo_parser = subparsers.add_parser('parsegeo', help='Parse a raw GEO file previously extracted from an IFS or TXP2 container')
    parsegeo_parser.add_argument(
        "geo",
        metavar="GEOFILE",
        help="The GEO file to parse",
    )
    parsegeo_parser.add_argument(
        "-v",
        "--verbose",
        action="store_true",
        help="Display verbuse debugging output",
    )

    render_parser = subparsers.add_parser('render', help='Render a particular animation out of a series of SWFs')
    render_parser.add_argument(
        "container",
        metavar="CONTAINER",
        type=str,
        nargs='+',
        help="A container file to use for loading SWF data. Can be either a TXP2 or IFS container.",
    )
    render_parser.add_argument(
        "--path",
        metavar="PATH",
        type=str,
        required=True,
        help='A path to render, specified either as "moviename" or "moviename.exportedtag".',
    )
    render_parser.add_argument(
        "--output",
        metavar="IMAGE",
        type=str,
        default="out.gif",
        help='The output file (ending either in .gif or .webp) where the render should be saved.',
    )
    render_parser.add_argument(
        "-v",
        "--verbose",
        action="store_true",
        help="Display verbuse debugging output",
    )

    args = parser.parse_args()

    if args.action == "extract":
        if args.split_textures:
            if args.write_raw:
                raise Exception("Cannot write raw textures when splitting sprites!")
            if args.generate_mapping_overlays:
                raise Exception("Cannot generate mapping overlays when splitting sprites!")

        with open(args.file, "rb") as bfp:
            afpfile = TXP2File(bfp.read(), verbose=args.verbose)

        # Actually place the files down.
        os.makedirs(args.dir, exist_ok=True)

        if not args.split_textures:
            for texture in afpfile.textures:
                filename = os.path.join(args.dir, texture.name)

                if texture.img:
                    if args.pretend:
                        print(f"Would write {filename}.png texture...")
                    else:
                        print(f"Writing {filename}.png texture...")
                        with open(f"{filename}.png", "wb") as bfp:
                            texture.img.save(bfp, format='PNG')

                if not texture.img or args.write_raw:
                    if args.pretend:
                        print(f"Would write {filename}.raw texture...")
                    else:
                        print(f"Writing {filename}.raw texture...")
                        with open(f"{filename}.raw", "wb") as bfp:
                            bfp.write(texture.raw)

                    if args.pretend:
                        print(f"Would write {filename}.xml texture info...")
                    else:
                        print(f"Writing {filename}.xml texture info...")
                        with open(f"{filename}.xml", "w") as sfp:
                            sfp.write(textwrap.dedent(f"""
                                <info>
                                    <width>{texture.width}</width>
                                    <height>{texture.height}</height>
                                    <type>{hex(texture.fmt)}</type>
                                    <raw>{filename}.raw</raw>
                                </info>
                            """).strip())

        if args.write_mappings:
            if not args.split_textures:
                for i, name in enumerate(afpfile.regionmap.entries):
                    if i < 0 or i >= len(afpfile.texture_to_region):
                        raise Exception(f"Out of bounds region {i}")
                    region = afpfile.texture_to_region[i]
                    texturename = afpfile.texturemap.entries[region.textureno]
                    filename = os.path.join(args.dir, name)

                    if args.pretend:
                        print(f"Would write {filename}.xml region information...")
                    else:
                        print(f"Writing {filename}.xml region information...")
                        with open(f"{filename}.xml", "w") as sfp:
                            sfp.write(textwrap.dedent(f"""
                                <info>
                                    <left>{region.left}</left>
                                    <top>{region.top}</top>
                                    <right>{region.right}</right>
                                    <bottom>{region.bottom}</bottom>
                                    <texture>{texturename}</texture>
                                </info>
                            """).strip())

            if afpfile.fontdata is not None:
                filename = os.path.join(args.dir, "fontinfo.xml")

                if args.pretend:
                    print(f"Would write {filename} font information...")
                else:
                    print(f"Writing {filename} font information...")
                    with open(filename, "w") as sfp:
                        sfp.write(str(afpfile.fontdata))

        if args.write_binaries:
            for i, name in enumerate(afpfile.swfmap.entries):
                swf = afpfile.swfdata[i]
                filename = os.path.join(args.dir, name)

                if args.pretend:
                    print(f"Would write {filename}.afp SWF data...")
                    print(f"Would write {filename}.bsi SWF descramble data...")
                else:
                    print(f"Writing {filename}.afp SWF data...")
                    with open(f"{filename}.afp", "wb") as bfp:
                        bfp.write(swf.data)
                    print(f"Writing {filename}.bsi SWF descramble data...")
                    with open(f"{filename}.bsi", "wb") as bfp:
                        bfp.write(swf.descramble_info)

            for i, name in enumerate(afpfile.shapemap.entries):
                shape = afpfile.shapes[i]
                filename = os.path.join(args.dir, f"{name}.geo")

                if args.pretend:
                    print(f"Would write {filename} shape data...")
                else:
                    print(f"Writing {filename} shape data...")
                    with open(filename, "wb") as bfp:
                        bfp.write(shape.data)

        if args.generate_mapping_overlays:
            overlays: Dict[str, Any] = {}

            for i, name in enumerate(afpfile.regionmap.entries):
                if i < 0 or i >= len(afpfile.texture_to_region):
                    raise Exception(f"Out of bounds region {i}")
                region = afpfile.texture_to_region[i]
                texturename = afpfile.texturemap.entries[region.textureno]

                if texturename not in overlays:
                    for texture in afpfile.textures:
                        if texture.name == texturename:
                            overlays[texturename] = Image.new(
                                'RGBA',
                                (texture.width, texture.height),
                                (0, 0, 0, 0),
                            )
                            break
                    else:
                        raise Exception(f"Couldn't find texture {texturename}")

                draw = ImageDraw.Draw(overlays[texturename])
                draw.rectangle(
                    ((region.left // 2, region.top // 2), (region.right // 2, region.bottom // 2)),
                    fill=(0, 0, 0, 0),
                    outline=(255, 0, 0, 255),
                    width=1,
                )
                draw.text(
                    (region.left // 2, region.top // 2),
                    name,
                    fill=(255, 0, 255, 255),
                )

            for name, img in overlays.items():
                filename = os.path.join(args.dir, name) + "_overlay.png"
                if args.pretend:
                    print(f"Would write {filename} overlay...")
                else:
                    print(f"Writing {filename} overlay...")
                    with open(filename, "wb") as bfp:
                        img.save(bfp, format='PNG')

        if args.split_textures:
            textures: Dict[str, Any] = {}
            announced: Dict[str, bool] = {}

            for i, name in enumerate(afpfile.regionmap.entries):
                if i < 0 or i >= len(afpfile.texture_to_region):
                    raise Exception(f"Out of bounds region {i}")
                region = afpfile.texture_to_region[i]
                texturename = afpfile.texturemap.entries[region.textureno]

                if texturename not in textures:
                    for tex in afpfile.textures:
                        if tex.name == texturename:
                            textures[texturename] = tex
                            break
                    else:
                        raise Exception("Could not find texture {texturename} to split!")

                if textures[texturename].img:
                    # Grab the location in the image, save it out to a new file.
                    filename = f"{texturename}_{name}.png"
                    filename = os.path.join(args.dir, filename)

                    if args.pretend:
                        print(f"Would write {filename} sprite...")
                    else:
                        print(f"Writing {filename} sprite...")
                        sprite = textures[texturename].img.crop(
                            (region.left // 2, region.top // 2, region.right // 2, region.bottom // 2),
                        )
                        with open(filename, "wb") as bfp:
                            sprite.save(bfp, format='PNG')
                else:
                    if not announced.get(texturename, False):
                        print(f"Cannot extract sprites from {texturename} because it is not a supported format!")
                        announced[texturename] = True

    if args.action == "update":
        # First, parse the file out
        with open(args.file, "rb") as bfp:
            afpfile = TXP2File(bfp.read(), verbose=args.verbose)

        # Now, find any PNG files that match texture names.
        for texture in afpfile.textures:
            filename = os.path.join(args.dir, texture.name) + ".png"

            if os.path.isfile(filename):
                print(f"Updating {texture.name} from {filename}...")

                with open(filename, "rb") as bfp:
                    afpfile.update_texture(texture.name, bfp.read())

        # Now, find any PNG files that match a specific sprite.
        for i, spritename in enumerate(afpfile.regionmap.entries):
            if i < 0 or i >= len(afpfile.texture_to_region):
                raise Exception(f"Out of bounds region {i}")
            region = afpfile.texture_to_region[i]
            texturename = afpfile.texturemap.entries[region.textureno]

            # Grab the location in the image to see if it exists.
            filename = f"{texturename}_{spritename}.png"
            filename = os.path.join(args.dir, filename)

            if os.path.isfile(filename):
                print(f"Updating {texturename} sprite piece {spritename} from {filename}...")

                with open(filename, "rb") as bfp:
                    afpfile.update_sprite(texturename, spritename, bfp.read())

        # Now, write out the updated file
        if args.pretend:
            print(f"Would write {args.file}...")
            afpfile.unparse()
        else:
            print(f"Writing {args.file}...")
            data = afpfile.unparse()
            with open(args.file, "wb") as bfp:
                bfp.write(data)

    if args.action == "print":
        # First, parse the file out
        with open(args.file, "rb") as bfp:
            afpfile = TXP2File(bfp.read(), verbose=args.verbose)

        # Now, print it
        print(json.dumps(afpfile.as_dict(), sort_keys=True, indent=4))

    if args.action == "parseafp":
        # First, load the AFP and BSI files
        with open(args.afp, "rb") as bafp:
            with open(args.bsi, "rb") as bbsi:
                swf = SWF("<unnamed>", bafp.read(), bbsi.read())

        # Now, print it
        swf.parse(verbose=args.verbose)
        print(json.dumps(swf.as_dict(), sort_keys=True, indent=4))

    if args.action == "parsegeo":
        # First, load the AFP and BSI files
        with open(args.geo, "rb") as bfp:
            geo = Shape("<unnamed>", bfp.read())

        # Now, print it
        geo.parse()
        if args.verbose:
            print(geo, file=sys.stderr)
        print(json.dumps(geo.as_dict(), sort_keys=True, indent=4))

    if args.action == "render":
        # This is a complicated one, as we need to be able to specify multiple
        # directories of files as well as support IFS files and TXP2 files.
        renderer = AFPRenderer()

        # TODO: Allow specifying individual folders and such.
        for container in args.container:
            with open(container, "rb") as bfp:
                data = bfp.read()

            afpfile = None
            try:
                afpfile = TXP2File(data, verbose=args.verbose)
            except Exception:
                pass

            if afpfile is not None:
                # TODO: Load from afp container
                pass

            ifsfile = None
            try:
                ifsfile = IFS(data, decode_textures=True)
            except Exception:
                pass

            if ifsfile is not None:
                for fname in ifsfile.filenames:
                    if fname.startswith("geo/"):
                        # Trim off directory.
                        shapename = fname[4:]

                        # Load file, register it.
                        fdata = ifsfile.read_file(fname)
                        shape = Shape(shapename, fdata)
                        renderer.add_shape(shapename, shape)

                        if args.verbose:
                            print(f"Added {shapename} to SWF shape library.", file=sys.stderr)
                    elif fname.startswith("tex/") and fname.endswith(".png"):
                        # Trim off directory, png extension.
                        texname = fname[4:][:-4]

                        # Load file, register it.
                        fdata = ifsfile.read_file(fname)
                        tex = Image.open(io.BytesIO(fdata))
                        renderer.add_texture(texname, tex)

                        if args.verbose:
                            print(f"Added {texname} to SWF texture library.", file=sys.stderr)
                    elif fname.startswith("afp/"):
                        # Trim off directory, see if it has a corresponding bsi.
                        afpname = fname[4:]
                        bsipath = f"afp/bsi/{afpname}"

                        if bsipath in ifsfile.filenames:
                            afpdata = ifsfile.read_file(fname)
                            bsidata = ifsfile.read_file(bsipath)
                            flash = SWF(afpname, afpdata, bsidata)
                            renderer.add_swf(afpname, flash)

                            if args.verbose:
                                print(f"Added {afpname} to SWF library.", file=sys.stderr)

            duration, images = renderer.render_path(args.path, verbose=args.verbose)
            if len(images) == 0:
                raise Exception("Did not render any frames!")
            images[0].save(args.output, save_all=True, append_images=images[1:], loop=0, duration=duration)
            print(f"Wrote animation to {args.output}")

    return 0


if __name__ == "__main__":
    sys.exit(main())