from datetime import datetime
from pathlib import Path

import click

from odoo_openupgrade_wizard.tools.tools_odoo import get_odoo_modules_from_csv
from odoo_openupgrade_wizard.tools.tools_odoo_module import Analysis
from odoo_openupgrade_wizard.tools.tools_system import (
    ensure_file_exists_from_template,
)


@click.command()
@click.option(
    "--analysis-file-path",
    type=click.Path(
        dir_okay=False,
    ),
    default="./analysis.html",
    help="Path where the HTML analysis report will be saved. "
    "Default is './analysis.html'",
)
@click.option(
    "--extra-modules",
    "extra_modules_list",
    # TODO, add a callback to check the quality of the argument
    help="Comma-separated list of modules to analyze. If not set, "
    "modules.csv will be used. Example: 'account,product,base'.",
)
@click.option(
    "--time-unit",
    type=click.Choice(["hour", "minute", "separator"]),
    default="separator",
    show_default=True,
    help="Format to use for displaying time in the report. "
    "*separator* display time as `HHH<sep>MM`, "
    "*hour* display time as decimal hour, "
    "*min* display time as minutes (rounded).",
)
@click.option(
    "--time-separator",
    default=":",
    help="Character to use as a separator in time output. "
    "Used only if --time-unit=separator. Default is ':' (e.g. HHH:MM).",
)
@click.pass_context
def estimate_workload(
    ctx, analysis_file_path, extra_modules_list, time_unit, time_separator
):
    """Estimate workload and create an analysis report.

    This command estimates the workload required for an Odoo
    migration based on the module set provided. The output is
    an HTML report showing time estimations for each module.
    """

    # Analyse
    analysis = Analysis(ctx)

    def time_to_text(minutes):
        """Return a text representation for minutes"""
        hours, mins = divmod(minutes, 60)
        if time_unit == "hour":
            result = str(hours)
        elif time_unit == "minute":
            result = str(minutes)
        else:
            result = "{}{}{:02d}".format(hours, time_separator, mins)
        return result

    if extra_modules_list:
        module_list = extra_modules_list.split(",")
    else:
        module_list = get_odoo_modules_from_csv(ctx.obj["module_file_path"])

    analysis.analyse_module_version(ctx, module_list)
    analysis.analyse_missing_module()
    analysis.analyse_openupgrade_state(ctx)
    analysis.estimate_workload(ctx)

    # Make some clean to display properly
    analysis.modules = sorted(analysis.modules)

    # Render html file
    ensure_file_exists_from_template(
        Path(analysis_file_path),
        "analysis.html.j2",
        ctx=ctx,
        analysis=analysis,
        current_date=datetime.now().strftime("%d/%m/%Y %H:%M:%S"),
        time_to_text=time_to_text,
    )