import base64
import io

from odoo import _, fields, models
from odoo.exceptions import ValidationError


class Selfconsumption(models.Model):
    _name = "energy_selfconsumption.selfconsumption"
    _inherit = ["mail.thread", "mail.activity.mixin"]
    _inherits = {
        "energy_project.project": "project_id",
    }
    _description = "Self-consumption Energy Project"

    def _compute_distribution_table_count(self):
        for record in self:
            record.distribution_table_count = len(record.distribution_table_ids)

    def _compute_inscription_count(self):
        for record in self:
            record.inscription_count = len(record.inscription_ids)

    project_id = fields.Many2one(
        "energy_project.project", required=True, ondelete="cascade"
    )
    code = fields.Char(string="CAU")
    cil = fields.Char(
        string="CIL", help="Production facility code for liquidation purposes"
    )
    owner_id = fields.Many2one(
        "res.partner",
        string="Owner",
        required=True,
        default=lambda self: self.env.company.partner_id,
    )
    power = fields.Float(string="Generation Power (kW)")
    distribution_table_ids = fields.One2many(
        "energy_selfconsumption.distribution_table",
        "selfconsumption_project_id",
        readonly=True,
    )
    distribution_table_count = fields.Integer(compute=_compute_distribution_table_count)
    inscription_ids = fields.One2many(
        "energy_project.inscription", "project_id", readonly=True
    )
    inscription_count = fields.Integer(compute=_compute_inscription_count)
    report_file = fields.Binary(string="Report File", attachment=True)
    report_file_name = fields.Char(string="Report File Name")

    def get_distribution_tables(self):
        self.ensure_one()
        return {
            "type": "ir.actions.act_window",
            "name": "Distribution Tables",
            "view_mode": "tree,form",
            "res_model": "energy_selfconsumption.distribution_table",
            "domain": [("selfconsumption_project_id", "=", self.id)],
            "context": {"create": True, "default_selfconsumption_project_id": self.id},
        }

    def get_inscriptions(self):
        self.ensure_one()
        return {
            "type": "ir.actions.act_window",
            "name": "Inscriptions",
            "view_mode": "tree,form",
            "res_model": "energy_project.inscription",
            "domain": [("project_id", "=", self.id)],
            "context": {"create": True, "default_project_id": self.id},
        }

    def distribution_table_state(self, actual_state, new_state):
        distribution_table_to_activate = self.distribution_table_ids.filtered(
            lambda table: table.state == actual_state
        )
        distribution_table_to_activate.write({"state": new_state})

    def set_in_activation_state(self):
        for record in self:
            if not record.distribution_table_ids.filtered_domain(
                [("state", "=", "validated")]
            ):
                raise ValidationError(_("Must have a valid Distribution Table."))
            record.write({"state": "activation"})
        self.distribution_table_state("validated", "process")

    def activate(self):
        for record in self:
            if not record.code:
                raise ValidationError(_("Project must have a valid Code."))
            if not record.cil:
                raise ValidationError(_("Project must have a valid CIL."))
            if not record.power or record.power <= 0:
                raise ValidationError(_("Project must have a valid Generation Power."))
            record.write({"state": "active"})
            self.distribution_table_state("process", "active")

    def action_selfconsumption_import_wizard(self):
        self.ensure_one()
        return {
            "name": _("Import Inscriptions and Supply Points"),
            "type": "ir.actions.act_window",
            "view_mode": "form",
            "res_model": "energy_selfconsumption.selfconsumption_import.wizard",
            "views": [(False, "form")],
            "view_id": False,
            "target": "new",
        }

    def set_inscription(self, selfconsumption_state):
        for record in self:
            record.write({"state": "inscription"})
        if selfconsumption_state == "activation":
            self.distribution_table_state("process", "validated")

    def set_draft(self):
        for record in self:
            record.write({"state": "draft"})

    def action_manager_authorization_report(self):
        self.ensure_one()
        return self.env.ref(
            "energy_selfconsumption.selfconsumption_manager_authorization_report"
        ).report_action(self)

    def action_power_sharing_agreement_report(self):
        self.ensure_one()
        return self.env.ref(
            "energy_selfconsumption.power_sharing_agreement_report"
        ).report_action(self)

    def action_manager_partition_coefficient_report(self):
        report_data = []
        process_tables = self.distribution_table_ids.filtered(
            lambda table: table.state == "process"
        )
        active_tables = self.distribution_table_ids.filtered(
            lambda table: table.state == "active"
        )
        tables_to_use = process_tables or active_tables
        for table in tables_to_use:
            for assignation in table.supply_point_assignation_ids:
                report_data.append(
                    {
                        "code": assignation.supply_point_id.code,
                        "coefficient": assignation.coefficient,
                    }
                )
        file_content = ""
        for data in report_data:
            line = f"{data['code']};{str(data['coefficient']).replace('.', ',')}\n"
            file_content += line
        txt_file = io.BytesIO(file_content.encode())
        file_name = "Coeficiente de reparto.txt"
        self.write(
            {
                "report_file": base64.b64encode(txt_file.getvalue()),
                "report_file_name": file_name,
            }
        )
        return {
            "type": "ir.actions.act_url",
            "url": f"web/content/{self._name}/{self.id}/report_file/{file_name}?download=true",
            "target": "new",
        }