# -*- coding: utf-8 -*-
# Copyright 2026 Nexa Systems Inc.
# License OPL-1 (Odoo Proprietary License v1.0)
# Part of the Fusion Plating product family.
"""Quality Dashboard snapshot endpoint.

Spec: docs/superpowers/specs/2026-05-25-quality-dashboard-redesign-design.md

Replaces the old /fp/quality/dashboard/counts router-style endpoint
with a single /fp/quality/dashboard/snapshot that returns:
  - banner: up to 6 most urgent items across all types (red "Needs
    Attention Today" surface)
  - sections: 6 per-type sections in canonical order, each with top-5
    items + open/overdue counts
"""
import logging
from datetime import timedelta

from odoo import fields, http
from odoo.http import request

_logger = logging.getLogger(__name__)


# Canonical section order — drives sections[] in the response.
# Sections whose model isn't installed are omitted (no error).
SECTION_ORDER = ['cert', 'hold', 'ncr', 'rma', 'capa', 'check']


# Per-type config: model name, kanban xmlid, display label, icon.
TYPE_CONFIG = {
    'cert':  {'model': 'fp.certificate',
              'label': 'Certificates',  'icon': '🏷️',
              'kanban_xmlid': 'fusion_plating_certificates.action_fp_certificate'},
    'hold':  {'model': 'fusion.plating.quality.hold',
              'label': 'Holds',         'icon': '🛑',
              'kanban_xmlid': 'fusion_plating_quality.action_fusion_plating_quality_hold'},
    'ncr':   {'model': 'fusion.plating.ncr',
              'label': 'NCRs',          'icon': '🔬',
              'kanban_xmlid': 'fusion_plating_quality.action_fusion_plating_ncr'},
    'rma':   {'model': 'fusion.plating.rma',
              'label': 'RMAs',          'icon': '↩️',
              'kanban_xmlid': 'fusion_plating_quality.action_fusion_plating_rma'},
    'capa':  {'model': 'fusion.plating.capa',
              'label': 'CAPAs',         'icon': '📋',
              'kanban_xmlid': 'fusion_plating_quality.action_fusion_plating_capa'},
    'check': {'model': 'fusion.plating.quality.check',
              'label': 'QC Checks',     'icon': '✓',
              'kanban_xmlid': 'fusion_plating_quality.action_fusion_plating_quality_check'},
}


# Per-type "overdue" thresholds (reused from the old counts endpoint —
# battle-tested). CAPA branches on due_date < today via use_due_date.
OVERDUE_THRESHOLDS = {
    'cert':  {'days': 1,    'use_due_date': False,
              'state_domain': [('state', '=', 'draft')]},
    'hold':  {'days': 3,    'use_due_date': False,
              'state_domain': [('state', 'in', ('on_hold', 'under_review'))]},
    'ncr':   {'days': 7,    'use_due_date': False,
              'state_domain': [('state', 'in',
                                ('open', 'containment', 'disposition'))]},
    'rma':   {'days': 5,    'use_due_date': False,
              'state_domain': [('state', '=', 'received')]},
    'capa':  {'days': None, 'use_due_date': True,
              'state_domain': [('state', 'not in',
                                ('closed', 'effective'))]},
    'check': {'days': 1,    'use_due_date': False,
              'state_domain': [('state', '=', 'pending')]},
}


class FpQualityDashboardSnapshot:
    """Builds the dashboard snapshot in one pass.

    Per Rule 13m, all cross-module field reads are sudo'd so non-admin
    users (Sales Reps viewing the dashboard) don't AccessError on
    partner_id.x_fc_rush / part_catalog_id.name / customer_spec_id.code.
    The Open-action navigates via standard act_window which re-enforces
    ACL on click (Rule 24 / D15).
    """

    BANNER_MAX = 6
    SECTION_TOP_N = 5

    def __init__(self, env):
        self.env = env
        self.now = fields.Datetime.now()
        self.today = fields.Date.context_today(env.user)

    def build(self):
        sections = []
        for type_code in SECTION_ORDER:
            section = self._build_section(type_code)
            if section is None:
                continue  # model not installed — omit
            sections.append(section)
        # Banner placeholder for Task 2 — fully implemented in Task 4.
        banner = {'items': [], 'all_clear': True, 'total_matching': 0}
        return {
            'banner': banner,
            'sections': sections,
            'computed_at': self.now.isoformat(),
        }

    def _build_section(self, type_code):
        """Return section dict with top-N items + counts.
        Returns None when the model isn't installed."""
        cfg = TYPE_CONFIG[type_code]
        if cfg['model'] not in self.env:
            return None
        # Open/overdue counts using the existing state filters
        state_dom = list(OVERDUE_THRESHOLDS[type_code]['state_domain'])
        Model = self.env[cfg['model']].sudo()
        open_count = Model.search_count(state_dom)
        overdue_count = self._overdue_count(type_code, Model)
        return {
            'type': type_code,
            'label': cfg['label'],
            'icon': cfg['icon'],
            'open': open_count,
            'overdue': overdue_count,
            'items': self._fetch_section_items(type_code, Model),
            'open_kanban_xmlid': cfg['kanban_xmlid'],
        }

    def _overdue_count(self, type_code, Model):
        """Count overdue per the OVERDUE_THRESHOLDS dispatch table."""
        cfg = OVERDUE_THRESHOLDS[type_code]
        dom = list(cfg['state_domain'])
        if cfg['use_due_date']:
            dom += [('due_date', '<', self.today),
                    ('due_date', '!=', False)]
        else:
            cutoff = self.now - timedelta(days=cfg['days'])
            dom += [('create_date', '<', cutoff)]
        return Model.search_count(dom)

    def _fetch_section_items(self, type_code, Model):
        """Top-N open records for the type, ordered by urgency
        (overdue first by oldest create_date, then by create_date asc).
        Returns list of item dicts in the snapshot shape.
        """
        state_dom = list(OVERDUE_THRESHOLDS[type_code]['state_domain'])
        # We need urgency labels per record — fetch open set, sort in
        # Python by (overdue_flag, age) so the top-N reflects urgency.
        recs = Model.search(state_dom, limit=200)  # safety cap
        if not recs:
            return []
        overdue_ids = set(self._overdue_ids(type_code, Model))
        # Sort: overdue first (by oldest create_date), then non-overdue
        # by oldest create_date.
        def rank_key(r):
            is_od = r.id in overdue_ids
            return (0 if is_od else 1, r.create_date or self.now)
        recs_sorted = sorted(recs, key=rank_key)
        top = recs_sorted[:self.SECTION_TOP_N]
        return [self._build_item(type_code, r, r.id in overdue_ids)
                for r in top]

    def _overdue_ids(self, type_code, Model):
        """IDs of overdue records for the type — reuses _overdue_count
        domain logic."""
        cfg = OVERDUE_THRESHOLDS[type_code]
        dom = list(cfg['state_domain'])
        if cfg['use_due_date']:
            dom += [('due_date', '<', self.today),
                    ('due_date', '!=', False)]
        else:
            cutoff = self.now - timedelta(days=cfg['days'])
            dom += [('create_date', '<', cutoff)]
        return Model.search(dom).ids

    def _build_item(self, type_code, rec, is_overdue):
        """Shape one record into the snapshot item dict."""
        cfg = TYPE_CONFIG[type_code]
        # Customer name — partner_id direct, OR via job_id for check
        partner = self._resolve_partner(rec)
        return {
            'id': rec.id,
            'name': rec.display_name or rec.name or f'#{rec.id}',
            'customer': partner.name if partner else '',
            'subtitle': self._build_subtitle(type_code, rec, is_overdue),
            'urgency': 'overdue' if is_overdue else 'normal',
            'critical_badge': None,  # populated in Task 4
            'open_action': {
                'res_model': cfg['model'],
                'res_id': rec.id,
            },
        }

    def _resolve_partner(self, rec):
        """Walk to partner: direct partner_id, or via job_id (checks),
        or via ncr_id (capa). Defensive on missing fields."""
        if 'partner_id' in rec._fields and rec.partner_id:
            return rec.partner_id
        if 'job_id' in rec._fields and rec.job_id \
                and 'partner_id' in rec.job_id._fields:
            return rec.job_id.partner_id
        if 'ncr_id' in rec._fields and rec.ncr_id \
                and 'partner_id' in rec.ncr_id._fields:
            return rec.ncr_id.partner_id
        return False

    def _build_subtitle(self, type_code, rec, is_overdue):
        """Second-line text per type. Implementation-phase choice
        per spec open question 1."""
        # Age in human terms — hours if < 24h, days otherwise
        if rec.create_date:
            age = self.now - rec.create_date
            hours = int(age.total_seconds() / 3600)
            age_str = (f'{hours}h' if hours < 24
                       else f'{hours // 24}d')
        else:
            age_str = ''
        if is_overdue:
            return f'{age_str} overdue' if age_str else 'overdue'
        return age_str


class FpQualityDashboardController(http.Controller):

    @http.route('/fp/quality/dashboard/snapshot',
                type='jsonrpc', auth='user', methods=['POST'])
    def snapshot(self):
        """Return the full dashboard snapshot. See spec §Data model."""
        return FpQualityDashboardSnapshot(request.env).build()