# Copyright 2016-2019 Onestein (<https://www.onestein.eu>)
# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).

from odoo import _, api, fields, models
from odoo.exceptions import UserError

from odoo.addons import decimal_precision as dp


class AccountInvoiceSpreadLine(models.Model):
    _name = "account.spread.line"
    _description = "Account Spread Lines"
    _order = "date"

    name = fields.Char("Description", readonly=True)
    amount = fields.Float(digits=dp.get_precision("Account"), required=True)
    date = fields.Date(required=True)
    spread_id = fields.Many2one(
        "account.spread", string="Spread Board", ondelete="cascade"
    )
    move_id = fields.Many2one("account.move", string="Journal Entry", readonly=True)

    @api.multi
    def create_and_reconcile_moves(self):
        grouped_lines = {}
        for spread_line in self:
            spread = spread_line.spread_id
            spread_line_list = grouped_lines.get(
                spread, self.env["account.spread.line"]
            )
            grouped_lines.update({spread: spread_line_list + spread_line})
        for spread in grouped_lines:
            created_moves = grouped_lines[spread]._create_moves()

            if created_moves:
                post_msg = _("Created move(s) ")
                post_msg += ", ".join(
                    "<a href=# data-oe-model=account.move data-oe-id=%d"
                    ">%s</a>" % (move.id, move.name)
                    for move in created_moves
                )
                spread.message_post(body=post_msg)

            spread._reconcile_spread_moves(created_moves)
            self._post_spread_moves(spread, created_moves)

    @api.model
    def _post_spread_moves(self, spread, moves):
        if not moves:
            return
        if spread.company_id.force_move_auto_post:
            moves.post()
        elif spread.move_line_auto_post:
            moves.post()

    @api.multi
    def create_move(self):
        """Button to manually create a move from a spread line entry.
        """
        self.ensure_one()
        self.create_and_reconcile_moves()

    @api.multi
    def _create_moves(self):
        if self.filtered(lambda l: l.move_id):
            raise UserError(
                _(
                    "This spread line is already linked to a "
                    "journal entry! Please post or delete it."
                )
            )

        created_moves = self.env["account.move"]
        for line in self:
            move_vals = line._prepare_move()
            move = self.env["account.move"].create(move_vals)

            line.write({"move_id": move.id})
            created_moves += move
        return created_moves

    @api.multi
    def _prepare_move(self):
        self.ensure_one()

        spread_date = self.env.context.get("spread_date") or self.date
        spread = self.spread_id
        analytic = spread.account_analytic_id
        analytic_tags = [(4, tag.id, None) for tag in spread.analytic_tag_ids]

        company_currency = spread.company_id.currency_id
        current_currency = spread.currency_id
        not_same_curr = company_currency != current_currency
        amount = current_currency._convert(
            self.amount, company_currency, spread.company_id, spread_date
        )

        line_ids = [
            (
                0,
                0,
                {
                    "name": spread.name.split("\n")[0][:64],
                    "account_id": spread.debit_account_id.id,
                    "debit": amount if amount > 0.0 else 0.0,
                    "credit": -amount if amount < 0.0 else 0.0,
                    "partner_id": self.spread_id.invoice_id.partner_id.id,
                    "analytic_account_id": analytic.id,
                    "analytic_tag_ids": analytic_tags,
                    "currency_id": not_same_curr and current_currency.id or False,
                    "amount_currency": not_same_curr and -1.0 * self.amount or 0.0,
                },
            ),
            (
                0,
                0,
                {
                    "name": spread.name.split("\n")[0][:64],
                    "account_id": spread.credit_account_id.id,
                    "credit": amount if amount > 0.0 else 0.0,
                    "debit": -amount if amount < 0.0 else 0.0,
                    "partner_id": self.spread_id.invoice_id.partner_id.id,
                    "analytic_account_id": analytic.id,
                    "analytic_tag_ids": analytic_tags,
                    "currency_id": not_same_curr and current_currency.id or False,
                    "amount_currency": not_same_curr and self.amount or 0.0,
                },
            ),
        ]

        return {
            "name": self.name or "/",
            "ref": self.name,
            "date": spread_date,
            "journal_id": spread.journal_id.id,
            "line_ids": line_ids,
            "company_id": spread.company_id.id,
        }

    @api.multi
    def open_move(self):
        """Used by a button to manually view a move from a
        spread line entry.
        """
        self.ensure_one()
        return {
            "name": _("Journal Entry"),
            "view_type": "form",
            "view_mode": "form",
            "res_model": "account.move",
            "view_id": False,
            "type": "ir.actions.act_window",
            "res_id": self.move_id.id,
        }

    @api.multi
    def unlink_move(self):
        """Used by a button to manually unlink a move
        from a spread line entry.
        """
        for line in self:
            move = line.move_id
            if move.state == "posted":
                move.button_cancel()
            move.line_ids.remove_move_reconcile()
            post_msg = _("Deleted move %s") % line.move_id.id
            move.unlink()
            line.move_id = False
            line.spread_id.message_post(body=post_msg)

    @api.model
    def _create_entries(self):
        """Find spread line entries where date is in the past and
        create moves for them. Method also called by the cron job.
        """
        lines = self.search(
            [("date", "<=", fields.Date.today()), ("move_id", "=", False)]
        )
        lines.create_and_reconcile_moves()

        unposted_moves = (
            self.search([("move_id", "!=", False)])
            .mapped("move_id")
            .filtered(lambda m: m.state != "posted")
        )
        unposted_moves.filtered(lambda m: m.company_id.force_move_auto_post).post()

        spreads_to_archive = (
            self.env["account.spread"]
            .search([("all_posted", "=", True)])
            .filtered(lambda s: s.company_id.auto_archive)
        )
        spreads_to_archive.write({"active": False})