# -*- coding: utf-8 -*-
###############################################################################
#
#    Cybrosys Technologies Pvt. Ltd.
#
#    Copyright (C) 2024-TODAY Cybrosys Technologies(<https://www.cybrosys.com>)
#    Author: Cybrosys Techno Solutions (odoo@cybrosys.com)
#
#    You can modify it under the terms of the GNU AFFERO
#    GENERAL PUBLIC LICENSE (AGPL v3), Version 3.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU AFFERO GENERAL PUBLIC LICENSE (AGPL v3) for more details.
#
#    You should have received a copy of the GNU AFFERO GENERAL PUBLIC LICENSE
#    (AGPL v3) along with this program.
#    If not, see <http://www.gnu.org/licenses/>.
#
###############################################################################


from odoo import api, fields, models
#
#
class ProjectTask(models.Model):
    _inherit = 'project.task'

    task_sequence = fields.Char(string='Task Sequence', readonly=True, copy=False, default='New',
                                help='Hierarchical sequence number of the task.')

    @api.model_create_multi
    def create(self, vals_list):
        tasks = super(ProjectTask, self).create(vals_list)
        for task in tasks:
            task.with_context(bypass_sequence=True)._compute_custom_sequence()
        return tasks

    def write(self, vals):
        result = super(ProjectTask, self).write(vals)
        if not self.env.context.get('bypass_sequence'):
            for task in self:
                task.with_context(bypass_sequence=True)._compute_custom_sequence()
        return result

    def _compute_custom_sequence(self):
        for task in self:
            task_seq = self.env['ir.sequence'].next_by_code('project.task') or 'New'

            if not task.project_id or not task.project_id.project_sequence:
                continue  # Skip if missing project data

            if task.parent_id:
                parent_seq = task.parent_id.task_sequence or task.parent_id.name
                subtask_number = task._get_sibling_count(task.parent_id)

                # Use sub-task name if provided
                # subtask_name = (task.name or '').split(',')[0].strip()
                # if subtask_name:
                #     sequence = f"{parent_seq}/{subtask_name}"
                # else:
                sequence = f"{parent_seq}/Sub Task {subtask_number}"
            else:
                task_number = task._get_task_count(task.project_id)
                formatted_task_number = str(task_number).zfill(4)

                sequence = self.env['ir.sequence'].search([('code', '=', 'project.task')], limit=1)
                task_prefix = sequence.prefix if sequence else ''
                sequence = f"{task.project_id.project_sequence}-{task_prefix}{formatted_task_number}"

            # Avoid recursion
            task.sudo().write({'task_sequence': sequence})

    def _get_task_count(self, project):
        return self.search_count([
            ('project_id', '=', project.id),
            ('parent_id', '=', False)
        ])

    def _get_sibling_count(self, parent_task):
        return self.search_count([
            ('parent_id', '=', parent_task.id),
            ('id', '!=', self.id)
        ]) + 1