from odoo import models, fields, api


class ProjectProject(models.Model):
    _inherit = 'project.project'

    # Employee selector
    selected_employee_id = fields.Many2one(
        'hr.employee',
        string='Employee'
    )

    # Related user (used for task lookup)
    selected_user_id = fields.Many2one(
        'res.users',
        related='selected_employee_id.user_id',
        store=False
    )

    employee_project_work_ids = fields.One2many(
        'employee.project.work.line',
        'project_parent_id',
        compute='_compute_employee_project_work',
        store=True
    )

    @api.depends('selected_employee_id', 'selected_employee_id.user_id')
    @api.onchange('selected_employee_id')
    def _compute_employee_project_work(self):
        for project in self:
            project.employee_project_work_ids = [(5, 0, 0)]

            if not project.selected_employee_id or not project.selected_employee_id.user_id:
                continue

            user = project.selected_employee_id.user_id

            tasks = self.env['project.task'].search([
                ('user_ids', 'in', user.id),
                ('project_id.active', '=', True),
            ])

            projects = tasks.mapped('project_id')

            lines = []
            for proj in projects:
                proj_tasks = tasks.filtered(lambda t: t.project_id == proj)

                lines.append((0, 0, {
                    'project_id': proj.id,
                    'task_ids': [(6, 0, proj_tasks.ids)],
                    'task_count': len(proj_tasks),
                }))

            project.employee_project_work_ids = lines