# Better case
import logging
import os
import sys
from enum import Enum
from pprint import pformat, pprint
from types import SimpleNamespace

import coloredlogs
import typer
from typing_extensions import Annotated

from iam.app import App
from iam.framework import (empty, get_app_logger, iterate_any, open_yaml,
                           prune, to_csv, to_json, to_yaml)
from rich import box
from rich.console import Console
from rich.pretty import pprint
from rich.prompt import Prompt
from rich.table import Table

from . import exceptions as error
# from .cli_views import OutputFormat #, view_list, view_show
from .cli_views import ViewItem, ViewList

IamException = error.IamException


# Global vars
# ======================


# See: https://docs.python.org/3.8/library/logging.html#logging-levels
DEFAULT_LOG_LEVEL = 30  # warning

# Get default ident
DEBUG = os.environ.get("IAM_DEBUG", "False")
DEFAULT_IDENT = os.environ.get("IAM_IDENT", os.environ.get("SHELL_IDENT", ""))
DEFAULT_CONFIG = os.environ.get("IAM_CONFIG", None)
BOX_STYLE = box.MINIMAL
TABLE_MIN_WIDTH = 80

table_box_params = {
    "box": box.ASCII2,
    "min_width": 60,
}


# Init app
# ======================

logger = logging.getLogger(__name__)

console = Console()
item_view = ViewItem(output=console.print)
list_view = ViewList(output=console.print)


# General CLI
# ======================
cli = typer.Typer(rich_markup_mode="rich")


@cli.callback()
def cli_callback(
    ctx: typer.Context,
    verbose: Annotated[int, typer.Option("--verbose", "-v", count=True, max=3)] = 0,
    config: Annotated[
        str, typer.Option("--config", "-C", help="Configuration directory")
    ] = DEFAULT_CONFIG,
    fmt: Annotated[
        list_view.formats_enum, typer.Option("--format", "-F", help="Output format")
    ] = list_view.default_format,
    ident: str = DEFAULT_IDENT,
):
    # Calculate log level
    log_level = DEFAULT_LOG_LEVEL - verbose * 10
    log_level = log_level if log_level > 0 else 10

    # Define loggers
    loggers = {
        "iam": {"level": log_level},
        "iam.cli": {"level": "INFO"},
    }

    # Instanciate logger
    get_app_logger(loggers=loggers, level=log_level, colors=True)

    cli_config = SimpleNamespace(
        log_level=log_level,
        fmt=fmt,
        ident=ident,
    )
    render_config = {
        "fmt": fmt,
        "table_settings": table_box_params,
    }

    render_item = lambda *args, conf={}: item_view.render(
        *args, conf={**render_config, **conf}
    )
    render_list = lambda *args, conf={}: list_view.render(
        *args, conf={**render_config, **conf}
    )

    # Instanciate app
    logger.info(f"Current ident: {ident}")
    ctx.obj = SimpleNamespace(
        app=App(config_path=config, ident=ident),
        cli=cli_config,
        render_item=render_item,
        render_list=render_list,
    )


@cli.command("dump")
def main_dump(ctx: typer.Context):
    "Dump ident configuration"

    ctx.obj.app.user_dump()


@cli.command("help")
def main_dump(ctx: typer.Context):
    "Dump ident configuration"

    # pprint(ctx.parent.__dict__)

    # pprint (cli.__dict__)
    # pprint (dir(cli))
    # # help(cli.__class__)

    print("commands")
    for item in cli.registered_commands:
        pprint(item.__dict__)

        # get_help(ctx)

    # print ("OUTTT")
    # pprint ((cli.registered_commands[0]))
    # pprint ((cli.registered_commands[0].__dict__))


@cli.command("list")
def main_list(ctx: typer.Context):
    "List all items"

    ctx.invoke(kind_list, ctx)
    ctx.invoke(res_list, ctx)
    ctx.invoke(svc_list, ctx)


# Resource Kinds management
# ======================
# cli_kind = typer.Typer()


class KindCmd(str, Enum):
    "Kinds sub commands"
    LS = "list"
    SHOW = "show"


@cli.command(
    "kind",
    hidden=True,
    context_settings={"allow_extra_args": True, "ignore_unknown_options": True},
)
def cli_kind(ctx: typer.Context, cmd: KindCmd):
    """Command sources"""
    prefix = "kind_"
    func = globals()[f"{prefix}{cmd.value}"]
    return ctx.invoke(func, ctx)


@cli.command("kind list", rich_help_panel="Resources Kind")
def kind_list(
    ctx: typer.Context,
    name: Annotated[str, typer.Argument()] = "",
):
    "List resource kinds"

    # Fetch data
    filter = name
    resources_kind = ctx.obj.app.catalog.resources_kind
    data = []
    for name, item in sorted(resources_kind.items(), key=lambda key: key):
        if filter and not name.startswith(filter):
            continue
        data.append((name, item.desc))

    # Render data
    columns = ["name", "desc"]
    conf = {
        "table_title": "Resources kinds listing",
    }
    ctx.obj.render_list(data, columns, conf=conf)


@cli.command("kind show", rich_help_panel="Resources Kind")
def kind_show(
    ctx: typer.Context,
    name: Annotated[str, typer.Argument()] = "",
):
    "Show resource kinds"

    # Fetch data
    columns = ["name", "desc", "input", "needs", "remap"]
    filter = name
    resources_kind = ctx.obj.app.catalog.resources_kind
    for name, item in sorted(resources_kind.items(), key=lambda key: key):
        if filter and not name.startswith(filter):
            continue

        data = [
            item.name,
            item.desc,
            f"{to_yaml(item.input).strip()}",
            f"{to_yaml(item.needs)}".strip(),
            f"{to_yaml(item.remap)}".strip(),
        ]

        # Render data
        conf = {
            "table_title": f"Resources kind: {data[0]}",
        }
        ctx.obj.render_item(data, columns, fmt=fmt, conf=conf)


# Resource management
# ======================
# cli_res = typer.Typer()


class ResCmds(str, Enum):
    "Resources sub commands"
    LS = "list"
    SHOW = "show"


@cli.command(
    "res",
    hidden=True,
    context_settings={"allow_extra_args": True, "ignore_unknown_options": True},
)
def cli_res(ctx: typer.Context, cmd: ResCmds):
    """Command sources"""
    pprint(ctx.__dict__)
    prefix = "res_"
    func = globals()[f"{prefix}{cmd.value}"]
    ctx.invoke(res_list, ctx)
    # ctx.invoke(func, ctx)


@cli.command("res list", rich_help_panel="Resources")
def res_list(
    ctx: typer.Context,
    name: Annotated[str, typer.Argument()] = "",
):
    "List resource kinds"

    # Fetch data
    filter = name
    resources = ctx.obj.app.catalog.resources
    data = []
    for name, res in sorted(resources.items(), key=lambda key: key):
        if filter and not name.startswith(filter):
            continue
        data.append(
            (
                res.get_kind(),
                res.get_name(),
                res.desc,
            )
        )

    # Render data
    columns = ["kind", "name", "desc"]
    conf = {
        "table_title": "Resources listing",
    }
    ctx.obj.render_list(data, columns, conf=conf)


@cli.command("res show", rich_help_panel="Resources")
def res_show(
    ctx: typer.Context,
    name: Annotated[str, typer.Argument()] = "",
    all: bool = False,
):
    "Show resource"

    # Fetch data
    columns = ["name", "uses", "input"]
    columns_all = columns + ["active", "deps", "missing", "loop_max", "loop", "need"]
    filter = name
    resources = ctx.obj.app.catalog.resources.select("startswith", name)
    for name, item in sorted(resources.items(), key=lambda key: key):
        if filter and not name.startswith(filter):
            continue

        if not all and not item.is_active():
            continue

        data = [
            name,
            to_yaml(item.uses).strip(),
            to_yaml(item.input).strip(),
        ]
        if all:
            data.extend(
                [
                    item.is_active(),
                    ",".join([x.name for x in item.resources_deps]),
                    ",".join(item.resources_missing),
                    item.loop_limit,
                    to_yaml(item.loop).strip(),
                    to_yaml(item.needs).strip(),
                ]
            )

        # Render data
        ctx.obj.render_item(
            data,
            columns_all if all else columns,
            conf={
                "table_title": f"Resources kind: {data[0]}",
            },
        )


# Services management
# ======================


class ServiceCmds(str, Enum):
    "Serviceources sub commands"
    LS = "list"
    SHOW = "show"


@cli.command(
    "svc",
    hidden=True,
    context_settings={"allow_extra_args": True, "ignore_unknown_options": True},
)
def cli_svc(ctx: typer.Context, cmd: ServiceCmds):
    """Command sources"""
    prefix = "svc_"
    func = globals()[f"{prefix}{cmd.value}"]
    return ctx.invoke(func, ctx)


@cli.command("svc list", rich_help_panel="Services")
def svc_list(
    ctx: typer.Context, name: Annotated[str, typer.Argument()] = "", all: bool = False
):
    # filter: str = ""):
    "List services"

    columns = ["name", "desc"]
    filter = name
    services = ctx.obj.app.catalog.services
    data = []
    for name, res in sorted(services.items(), key=lambda key: key[1].name):
        if filter and not name.startswith(filter):
            continue

        # if not all and not res.is_active():
        #     continue

        data.append(
            (
                # res.get_kind(),
                # res.get_name(),
                res.name,
                res.desc,
            )
        )

    # Render data
    ctx.obj.render_list(
        data,
        columns,
        conf={
            "table_title": f"Services listing",
        },
    )


@cli.command("svc show", rich_help_panel="Services")
def svc_show(
    ctx: typer.Context,
    name: Annotated[str, typer.Argument()] = "",
    all: bool = False,
):
    "Show service"

    columns = [
        "name",
        "desc",
        "enabled",
        "input",
        "commands",
        "required_svc",
        "resource_lookup",
        "rest_matches" "dump",
    ]
    columns_all = columns + ["active", "deps", "missing", "loop_max", "loop", "need"]

    output = {}
    services = ctx.obj.app.catalog.services.select("startswith", name)
    for name, svc in services.items():
        assert name == svc.name

        data = [
            svc.name,
            svc.desc,
            svc.enabled,
            svc.input,
            to_yaml(svc.list_cmds()).strip(),
            svc.required_services,
            svc.resources_lookup,
            svc.resources_matches,
            svc.dump_item(),
        ]
        data = [str(item) for item in data]

        ctx.obj.render_item(
            data,
            columns_all if all else columns,
            conf={
                "table_title": f"Service show: {data[0]}",
            },
        )


@cli.command("svc commands", rich_help_panel="Services")
def svc_commands(ctx: typer.Context):
    "List services commands"

    ret = {
        "shell": {},
        "cmds": {},
    }
    for svc_name, svc in ctx.obj.app.list_services().items():
        cmds = svc.list_cmds()
        for source in ["shell", "cmds"]:
            items = cmds[source]
            target = ret[source]
            for cmd_name, conf in items.items():
                target[cmd_name] = conf

    pprint(ret, expand_all=True)


@cli.command("svc run", rich_help_panel="Services")
def svc_run(ctx: typer.Context, name: str, command: str):
    "Run service command"

    ret = ctx.obj.app.services.get(name, resolve=True)
    tmp = ret.run_cmd(command)
    pprint(tmp)


# Shell management
# ======================


class ShellCmds(str, Enum):
    "Shellources sub commands"
    ENABLE = "enable"
    DISABLE = "disable"
    ORDER = "order"
    IDENTS = "idents"


@cli.command(
    "shell",
    hidden=True,
    context_settings={"allow_extra_args": True, "ignore_unknown_options": True},
)
def cli_shell(ctx: typer.Context, cmd: ShellCmds):
    """Command sources"""
    prefix = "shell_"
    func = globals()[f"{prefix}{cmd.value}"]
    return ctx.forward(func)
    # return ctx.invoke(func, ctx)


@cli.command("shell idents", rich_help_panel="Shell")
def shell_idents(ctx: typer.Context, filter: str = ""):
    "List idents"

    ret = ctx.obj.app.get_idents()

    print(" ".join(ret))

    # pprint(ret, expand_all=True)


@cli.command("shell order", rich_help_panel="Shell")
def shell_order(ctx: typer.Context, reverse: bool = False):
    "List services by loading order"

    table = Table(title="Identity services", **table_box_params)
    table.add_column("Order", style="magenta")
    table.add_column("Service", style="cyan")  # , justify="right", , no_wrap=True)

    # services , _ = ctx.obj.app.catalog.resolve_service_order(reverse=reverse)
    services, _ = ctx.obj.app.catalog.services.get_loading_order(reverse=reverse)
    for index, name in enumerate(services):
        table.add_row(str(index), name)

    console.print(table)


@cli.command("shell enable", rich_help_panel="Shell")
def shell_enable(ctx: typer.Context, ident):
    "Enable shell"

    app = ctx.obj.app

    # Disable existing
    # logger.info(f"Disabling ident: {app.ident_name}")
    ret1 = app.shell_disable()
    print("-- %< --" * 8)
    print(ret1)
    print("-- %< --" * 8)

    # Enable new
    # logger.info(f"Enabling ident: {ident}")
    app.init_ident(ident)
    ret2 = app.shell_enable()

    # Output
    print("-- %< --" * 8)
    print(ret2)
    print("-- %< --" * 8)


@cli.command("shell disable", rich_help_panel="Shell")
def shell_disable(ctx: typer.Context):
    "Disable shell"

    ret = ctx.obj.app.shell_disable()

    print("-- %< --" * 8)
    print(ret)
    print("-- %< --" * 8)


# Merge all subcommands
# ======================

# cli.add_typer(cli_shell, name="shell", help="Manage shell")
# cli.add_typer(cli_res, name="res", help="Manage resources")
# cli.add_typer(cli_svc, name="svc", help="Manage services")
# cli.add_typer(cli_kind, name="kind", help="Manage resource kind")


import traceback


def run():
    "Run cli"

    if DEBUG.lower() in ["true", "y", "1", "t"]:
        cli()
    else:
        try:
            cli()
        except IamException as err:
            _msg = f"Iam exited with {type(err).__name__} error: {err}"
            logger.error(_msg)
            sys.exit(1)

            # traceback.print_stack()
            # logger.warning


# Cli bootsrapping
# ======================
if __name__ == "__main__":
    run()