from odoo import models, fields, tools, api


class BenchManagementLine(models.Model):
    _name = "bench.management.line"
    _description = "Employee Availability (Bench)"
    _auto = False
    _rec_name = 'employee_id'

    employee_id = fields.Many2one("hr.employee", readonly=True)
    job_id = fields.Many2one("hr.job", readonly=True)
    company_id = fields.Many2one("res.company", related="employee_id.company_id")

    project_line_ids = fields.Many2many(
        'project.team.line',
        compute='_compute_bench_details',
        string='Project Assignments',
        readonly=True,
    )
    limited_project_line_ids = fields.Many2many(
        compute='_compute_bench_details',
        comodel_name='project.team.line',
        string='Kanban Projects',
        readonly=True,
    )
    project_names_tooltip = fields.Text(
        string="Project Names",
        compute='_compute_bench_details',
        readonly=True,
    )
    project_count = fields.Integer(
        string="Project Count",
        compute='_compute_bench_details',
        readonly=True,
    )
    active_project_count = fields.Integer(
        string="Active Projects",
        compute='_compute_bench_details',
        readonly=True,
    )
    future_project_count = fields.Integer(
        string="Upcoming Projects",
        compute='_compute_bench_details',
        readonly=True,
    )
    completed_project_count = fields.Integer(
        string="Completed Projects",
        compute='_compute_bench_details',
        readonly=True,
    )

    status = fields.Selection([
        ("bench", "Bench"),
        ("partial", "Partial"),
        ("full", "Full"),
    ], readonly=True)

    def _get_line_availability_status(self, line, today):
        return line.status or 'not_started'

    def _compute_bench_details(self):
        project_team_line = self.env['project.team.line'].sudo()
        today = fields.Date.context_today(self)
        for rec in self:
            project_lines = project_team_line.search(
                [('employee_id', '=', rec.employee_id.id)],
                order='start_date desc, id desc'
            )
            active_lines = project_lines.filtered(
                lambda line: rec._get_line_availability_status(line, today) == 'in_progress'
            )
            future_lines = project_lines.filtered(
                lambda line: rec._get_line_availability_status(line, today) == 'not_started'
            )
            completed_lines = project_lines.filtered(
                lambda line: rec._get_line_availability_status(line, today) == 'done'
            )
            project_records = project_lines.mapped('project_id')

            if active_lines:
                bench_status = 'full'
            elif future_lines:
                bench_status = 'partial'
            else:
                bench_status = 'bench'

            rec.project_line_ids = project_lines
            rec.limited_project_line_ids = project_lines[:3]
            rec.project_count = len(project_records)
            rec.active_project_count = len(active_lines)
            rec.future_project_count = len(future_lines)
            rec.completed_project_count = len(completed_lines)
            rec.project_names_tooltip = '\n'.join(
                f"{line.project_id.display_name or 'No Project'} - {dict(line._fields['status'].selection).get(rec._get_line_availability_status(line, today), 'N/A')}"
                for line in project_lines
            ) or ''

    def init(self):
        tools.drop_view_if_exists(self.env.cr, self._table)

        self.env.cr.execute("""
            CREATE OR REPLACE VIEW bench_management_line AS (
                SELECT
                    he.id AS id,
                    he.id AS employee_id,
                    he.job_id AS job_id,
                    CASE
                        WHEN EXISTS (
                            SELECT 1
                            FROM project_team_line tpl
                            WHERE tpl.employee_id = he.id
                              AND tpl.status = 'in_progress'
                        ) THEN 'full'
                        WHEN EXISTS (
                            SELECT 1
                            FROM project_team_line tpl
                            WHERE tpl.employee_id = he.id
                              AND tpl.status = 'not_started'
                        ) THEN 'partial'
                        ELSE 'bench'
                    END AS status
                FROM hr_employee he
            )
        """)

class ProjectTeamLine(models.Model):
    _inherit = 'project.team.line'

    line_status_color = fields.Integer(
        compute='_compute_line_status_color',
        string='Status Color',
        readonly=True,
    )

    @api.depends('status')
    def _compute_line_status_color(self):
        color_map = {
            'not_started': 8,
            'in_progress': 2,
            'done': 10,
        }
        for line in self:
            line.line_status_color = color_map.get(line.status, 0)

    def name_get(self):
        result = []
        for rec in self:
            name = rec.project_id.display_name or 'No Project'
            result.append((rec.id, name))
        return result

    def _sync_project_members(self):
        if self.env.context.get('skip_project_team_member_sync'):
            return True
        self.mapped('project_id')._sync_members_from_team_lines()
        return True

    @api.model_create_multi
    def create(self, vals_list):
        records = super().create(vals_list)
        records._sync_project_members()
        return records

    def write(self, vals):
        projects = self.mapped('project_id')
        res = super().write(vals)
        (projects | self.mapped('project_id'))._sync_members_from_team_lines()
        return res

    def unlink(self):
        projects = self.mapped('project_id')
        res = super().unlink()
        projects._sync_members_from_team_lines()
        return res