# -*- coding: utf-8 -*-
# Copyright 2024-2026 Nexa Systems Inc.
# License OPL-1 (Odoo Proprietary License v1.0)

"""Repair dashboard data provider.

Feeds the OWL client action `fusion_repairs.dashboard` with KPI counts,
recent activity, and upcoming maintenance. Lives as an AbstractModel
because it stores nothing - all values are computed on demand.
"""

from datetime import datetime, timedelta

from odoo import api, fields, models


class FusionRepairDashboard(models.AbstractModel):
    _name = 'fusion.repair.dashboard'
    _description = 'Repair Dashboard Data Provider'

    @api.model
    def get_dashboard_data(self):
        """Return everything the dashboard needs in a single call."""
        Repair = self.env['repair.order']
        Contract = self.env['fusion.repair.maintenance.contract']
        today = fields.Date.context_today(self)
        month_start = today.replace(day=1)
        thirty_days = today + timedelta(days=30)

        # ---------------- KPI counters ----------------
        open_domain = [('state', 'not in', ('done', 'cancel'))]
        urgent_domain = open_domain + [('x_fc_urgency', 'in', ('urgent', 'safety'))]
        new_this_month_domain = [('create_date', '>=', month_start)]
        no_task_domain = open_domain + [
            ('x_fc_technician_task_ids', '=', False),
        ]
        requote_domain = open_domain + [('x_fc_requires_requote', '=', True)]

        stats = {
            'open_count': Repair.search_count(open_domain),
            'urgent_count': Repair.search_count(urgent_domain),
            'new_this_month': Repair.search_count(new_this_month_domain),
            'awaiting_dispatch': Repair.search_count(no_task_domain),
            'requires_requote': Repair.search_count(requote_domain),
            'maintenance_due_30d': Contract.search_count([
                ('state', '=', 'active'),
                ('next_due_date', '<=', thirty_days),
            ]),
            'maintenance_active_total': Contract.search_count([
                ('state', '=', 'active'),
            ]),
        }

        # ---------------- Source breakdown for the doughnut ----------------
        source_rows = Repair._read_group(
            open_domain,
            ['x_fc_intake_source'],
            ['__count'],
        )
        source_breakdown = []
        source_labels = dict(Repair._fields['x_fc_intake_source'].selection)
        for src, count in source_rows:
            source_breakdown.append({
                'key': src or 'manual',
                'label': source_labels.get(src or 'manual', src or 'Other'),
                'count': count,
            })

        # ---------------- Urgency breakdown ----------------
        urgency_rows = Repair._read_group(
            open_domain,
            ['x_fc_urgency'],
            ['__count'],
        )
        urgency_labels = dict(Repair._fields['x_fc_urgency'].selection)
        urgency_breakdown = [{
            'key': u or 'normal',
            'label': urgency_labels.get(u or 'normal', 'Normal'),
            'count': c,
        } for u, c in urgency_rows]

        # ---------------- Recent service calls (last 5) ----------------
        recent = []
        for r in Repair.search([], order='create_date desc', limit=5):
            recent.append({
                'id': r.id,
                'name': r.name,
                'partner_name': r.partner_id.name or '',
                'category': r.x_fc_repair_category_id.name or '',
                'urgency': r.x_fc_urgency,
                'state': r.state,
                'state_label': dict(Repair._fields['state'].selection).get(r.state, r.state),
                'create_date': fields.Datetime.to_string(r.create_date),
                'source': r.x_fc_intake_source or '',
                'source_label': source_labels.get(r.x_fc_intake_source, ''),
            })

        # ---------------- Upcoming maintenance (next 5 due) ----------------
        upcoming = []
        for c in Contract.search(
            [('state', '=', 'active'), ('next_due_date', '!=', False)],
            order='next_due_date asc', limit=5,
        ):
            upcoming.append({
                'id': c.id,
                'name': c.name,
                'partner_name': c.partner_id.name or '',
                'product_name': c.product_id.display_name or '',
                'next_due_date': fields.Date.to_string(c.next_due_date),
                'days_until': (c.next_due_date - today).days if c.next_due_date else 0,
                'reminder_band': c.last_reminder_band or '',
            })

        # ---------------- Portal URLs (resolved server-side) ----------------
        ICP = self.env['ir.config_parameter'].sudo()
        base_url = ICP.get_param('web.base.url', '').rstrip('/')
        portals = {
            'client_portal_url': base_url + (ICP.get_param(
                'fusion_repairs.client_portal_url', '/repair'
            ) or '/repair'),
            'sales_rep_portal_url': base_url + '/my/repair/new',
        }

        # ---------------- M7: failure-rate analytics ----------------
        # Top products by repair count in the last 90 days (excludes draft).
        ninety = datetime.now() - timedelta(days=90)
        failure_rows = Repair._read_group(
            [
                ('create_date', '>=', ninety),
                ('product_id', '!=', False),
                ('state', '!=', 'cancel'),
            ],
            ['product_id'],
            ['__count'],
            order='__count desc',
            limit=8,
        )
        failures_by_product = [{
            'product_id': p.id,
            'product_name': p.display_name,
            'repair_count': c,
        } for p, c in failure_rows]

        # Top symptom categories (issue_category) in the last 90 days.
        symptom_rows = Repair._read_group(
            [
                ('create_date', '>=', ninety),
                ('x_fc_issue_category', '!=', False),
                ('state', '!=', 'cancel'),
            ],
            ['x_fc_issue_category'],
            ['__count'],
            order='__count desc',
            limit=8,
        )
        failures_by_symptom = [{
            'symptom': s or 'Other',
            'repair_count': c,
        } for s, c in symptom_rows]

        # M9: margin summary (open + done in the last 90 days).
        margin_rows = self.env['repair.order'].search([
            ('create_date', '>=', ninety),
            ('state', '!=', 'cancel'),
        ])
        total_revenue = sum(margin_rows.mapped('x_fc_revenue'))
        total_labour = sum(margin_rows.mapped('x_fc_labour_cost'))
        total_parts = sum(margin_rows.mapped('x_fc_parts_cost'))
        total_margin = total_revenue - total_labour - total_parts
        margin_summary = {
            'revenue': total_revenue,
            'labour_cost': total_labour,
            'parts_cost': total_parts,
            'margin': total_margin,
            'margin_pct': (total_margin / total_revenue * 100) if total_revenue else 0.0,
            'sample_size': len(margin_rows),
        }

        return {
            'stats': stats,
            'urgency_breakdown': urgency_breakdown,
            'source_breakdown': source_breakdown,
            'recent': recent,
            'upcoming': upcoming,
            'portals': portals,
            'failures_by_product': failures_by_product,
            'failures_by_symptom': failures_by_symptom,
            'margin_summary': margin_summary,
        }