# -*- coding: utf-8 -*-
# Copyright 2026 Nexa Systems Inc.
# License OPL-1 (Odoo Proprietary License v1.0)
#
# fp.job — native plating job model.
#
# Replaces mrp.production for plating. One record per shop-floor job.
# Header data lives here; per-operation detail on fp.job.step (Task 1.5).
# Recipe template (fusion.plating.process.node) is unchanged — this
# model just instantiates from it via fp.job.step.recipe_node_id.
#
# State machine:
#   draft -> confirmed -> in_progress -> done
#                |                          ^
#                v                          |
#            cancelled                (rework reverts here)
#   on_hold can be entered from confirmed or in_progress.

import pytz

from odoo import _, api, fields, models
from odoo.exceptions import UserError


class FpJob(models.Model):
    _name = 'fp.job'

    def fp_format_local(self, dt, fmt='%Y-%m-%d %H:%M'):
        """Format a UTC datetime in the viewer's local timezone.

        Used by report templates: QWeb's eval scope doesn't expose pytz
        or format_datetime, but record methods are always callable, so
        templates do `<span t-esc="job.fp_format_local(dt, '%H:%M')"/>`.

        Resolution order matches the rest of the module: env.user.tz →
        company.x_fc_default_tz → UTC.
        """
        if not dt:
            return ''
        tz_name = (
            self.env.user.tz
            or ('x_fc_default_tz' in self.env.company._fields
                and self.env.company.x_fc_default_tz)
            or 'UTC'
        )
        try:
            tz = pytz.timezone(tz_name)
        except Exception:
            tz = pytz.UTC
        if dt.tzinfo is None:
            dt = pytz.UTC.localize(dt)
        return dt.astimezone(tz).strftime(fmt)
    _description = 'Plating Job'
    _inherit = ['mail.thread', 'mail.activity.mixin']
    # Sub 12d — state-aware sort. Active work bubbles to the top
    # (in_progress → confirmed/draft → on_hold → done → cancelled),
    # then high-priority first within each state, then nearest deadline.
    # state_priority is a small stored compute below.
    _order = 'state_priority asc, priority desc, date_deadline asc, id desc'
    _rec_name = 'name'

    name = fields.Char(
        required=True,
        copy=False,
        readonly=True,
        default=lambda self: _('New'),
        index=True,
    )

    @api.depends('name')
    def _compute_display_name(self):
        """Reformat 'WH/JOB/00011' → 'Work Order # 00011' for every
        human-facing surface (form header, breadcrumbs, M2O dropdowns,
        smart-button titles, error messages). The DB `name` is
        unchanged so existing certs / deliveries / chatter references
        don't break.
        """
        for job in self:
            if job.name and '/' in job.name:
                suffix = job.name.rsplit('/', 1)[-1]
                job.display_name = _('Work Order # %s') % suffix
            else:
                job.display_name = job.name or ''

    state = fields.Selection(
        [
            ('draft', 'Draft'),
            ('confirmed', 'Confirmed'),
            ('in_progress', 'In Progress'),
            ('on_hold', 'On Hold'),
            ('done', 'Done'),
            ('cancelled', 'Cancelled'),
        ],
        default='draft',
        required=True,
        tracking=True,
        index=True,
    )
    # Sub 12d — drives the default sort so active jobs surface above
    # closed jobs. Lower number = sorted earlier. Stored + indexed so
    # SQL ORDER BY hits an index and doesn't recompute per row.
    state_priority = fields.Integer(
        string='State Priority',
        compute='_compute_state_priority',
        store=True,
        index=True,
    )

    _STATE_SORT_RANK = {
        'in_progress': 0,
        'confirmed':   1,
        'draft':       2,
        'on_hold':     3,
        'done':        4,
        'cancelled':   5,
    }

    @api.depends('state')
    def _compute_state_priority(self):
        for rec in self:
            rec.state_priority = self._STATE_SORT_RANK.get(rec.state, 9)
    priority = fields.Selection(
        [
            ('low', 'Low'),
            ('normal', 'Normal'),
            ('high', 'High'),
            ('rush', 'Rush'),
        ],
        default='normal',
        tracking=True,
    )
    partner_id = fields.Many2one(
        'res.partner',
        string='Customer',
        required=True,
        tracking=True,
    )
    product_id = fields.Many2one('product.product', string='Reference Product')
    qty = fields.Float(string='Quantity', required=True, default=1.0)
    qty_done = fields.Float(string='Quantity Completed')
    qty_scrapped = fields.Float(string='Quantity Scrapped')
    date_deadline = fields.Datetime(string='Deadline', tracking=True)
    date_planned_start = fields.Datetime(string='Planned Start')
    date_started = fields.Datetime(string='Actual Start', readonly=True)
    date_finished = fields.Datetime(string='Actual Finish', readonly=True)
    origin = fields.Char(string='Source SO', help='Sale Order name for traceability.')
    sale_order_id = fields.Many2one('sale.order', string='Sale Order')
    facility_id = fields.Many2one('fusion.plating.facility', string='Facility')
    manager_id = fields.Many2one('res.users', string='Plating Manager')
    company_id = fields.Many2one(
        'res.company',
        default=lambda self: self.env.company,
        required=True,
    )

    # ------------------------------------------------------------------
    # Source / recipe / invoicing — core-safe (target models reachable
    # via current depends: sale_management → sale → account, and our
    # own fusion.plating.process.node).
    #
    # Plating-specific extensions (part_catalog_id, coating_config_id,
    # customer_spec_id, portal_job_id, delivery_id, qc_check_id) are
    # deferred to their owning modules via _inherit = 'fp.job' to avoid
    # inverting the dependency graph. See spec §5.1.
    # ------------------------------------------------------------------
    sale_order_line_ids = fields.Many2many(
        'sale.order.line',
        'fp_job_sale_order_line_rel',
        'job_id', 'line_id',
        string='Source SO Lines',
    )
    recipe_id = fields.Many2one(
        'fusion.plating.process.node',
        string='Recipe',
        domain=[('node_type', '=', 'recipe')],
    )
    start_at_node_id = fields.Many2one(
        'fusion.plating.process.node',
        string='Start at Node',
        help='Rework: start the job at this recipe node (skip earlier).',
    )
    invoice_ids = fields.Many2many(
        'account.move',
        'fp_job_account_move_rel',
        'job_id', 'move_id',
        string='Invoices',
    )

    # ------------------------------------------------------------------
    # Cost rollup — actual_cost stays at 0 until Task 1.5 wires step
    # time × work_centre.cost_per_hour. quoted_revenue is a manual entry
    # for now (will be filled by the SO → job hook in Phase 2).
    # ------------------------------------------------------------------
    currency_id = fields.Many2one(
        'res.currency',
        required=True,
        default=lambda self: self.env.company.currency_id,
    )
    quoted_revenue = fields.Monetary(
        currency_field='currency_id',
        help='From source SO.',
    )
    actual_cost = fields.Monetary(
        currency_field='currency_id',
        compute='_compute_costs', store=True,
    )
    margin = fields.Monetary(
        currency_field='currency_id',
        compute='_compute_costs', store=True,
    )
    margin_pct = fields.Float(
        compute='_compute_costs', store=True,
    )

    @api.depends('quoted_revenue')
    def _compute_costs(self):
        """Cost rollup for the job header.

        TODO(Task 1.5): when fp.job.step lands, expand @api.depends to
        include 'step_ids.cost_total' so actual_cost rolls up
        step time × work_centre.cost_per_hour automatically.
        """
        for job in self:
            job.actual_cost = 0.0
            job.margin = job.quoted_revenue - job.actual_cost
            job.margin_pct = (
                (job.margin / job.quoted_revenue * 100.0)
                if job.quoted_revenue else 0.0
            )

    # ------------------------------------------------------------------
    # current_location — operator-readable status string. Stub here;
    # full "Queued: Bath 3" / "In progress: Oven A" rendering needs
    # fp.job.step + fp.work.centre, which lands in Tasks 1.5/1.6.
    # ------------------------------------------------------------------
    current_location = fields.Char(
        compute='_compute_current_location',
        help='Human-readable: "Queued: Bath 3" / "In progress: Oven A" / "Ready to ship".',
    )

    def _compute_current_location(self):
        for job in self:
            if job.state == 'draft':
                job.current_location = 'Not started'
            elif job.state == 'cancelled':
                job.current_location = 'Cancelled'
            elif job.state == 'done':
                job.current_location = 'Done'
            else:
                job.current_location = job.state.replace('_', ' ').title()

    # ------------------------------------------------------------------
    # Steps — One2many to fp.job.step (Task 1.5)
    # ------------------------------------------------------------------
    step_ids = fields.One2many(
        'fp.job.step',
        'job_id',
        string='Steps',
    )

    # ===== Sub 12b — traveller header + active timer ========================
    # Header counters mirror the paper traveller's "Qty Rec." / "VIS INSP."
    # / "Rework" columns (screens 16-18). Sub 12c's traveller report pulls
    # these into the printed header.
    qty_received = fields.Integer(
        string='Qty Received',
        help='Paper traveller "Qty Rec." column.',
    )
    qty_visual_inspection_rejects = fields.Integer(
        string='Visual Insp Rejects',
        help='Paper traveller "VIS INSP." column.',
    )
    qty_rework = fields.Integer(
        string='Qty Sent to Rework',
        help='Paper traveller "Rework" column.',
    )
    special_requirements = fields.Text(
        string='Special Requirements',
        help='Long free-form spec text from customer; printed on the '
             'traveller header (Sub 12c).',
    )
    active_timer_ids = fields.One2many(
        'fp.job.step.timelog',
        'job_id',
        string='Active Timers',
        domain=[('state', 'in', ('running', 'paused'))],
        help='Sub 12b — used by tablet for live timer badges. Filtered '
             'on state by Task 7\'s state field.',
    )
    move_ids = fields.One2many(
        'fp.job.step.move', 'job_id',
        string='Move Log',
    )
    # step_count + step_done_count are stored (drive list views / stat
    # buttons in Task 1.8). step_progress_pct stays non-stored — it's a
    # cheap derivative. Odoo flags as inconsistent when stored and
    # non-stored fields share a compute method, so they get distinct
    # methods below.
    step_count = fields.Integer(compute='_compute_step_counts', store=True)
    step_done_count = fields.Integer(compute='_compute_step_counts', store=True)
    step_progress_pct = fields.Float(compute='_compute_step_progress_pct')
    current_step_id = fields.Many2one(
        'fp.job.step',
        compute='_compute_current_step',
    )

    @api.depends('step_ids', 'step_ids.state')
    def _compute_step_counts(self):
        for job in self:
            job.step_count = len(job.step_ids)
            job.step_done_count = len(job.step_ids.filtered(lambda s: s.state == 'done'))

    @api.depends('step_count', 'step_done_count')
    def _compute_step_progress_pct(self):
        for job in self:
            job.step_progress_pct = (
                (job.step_done_count / job.step_count * 100.0)
                if job.step_count else 0.0
            )

    @api.depends('step_ids.state', 'step_ids.sequence')
    def _compute_current_step(self):
        for job in self:
            in_prog = job.step_ids.filtered(lambda s: s.state == 'in_progress')
            if in_prog:
                job.current_step_id = in_prog.sorted('sequence')[:1]
                continue
            ready = job.step_ids.filtered(lambda s: s.state == 'ready')
            if ready:
                job.current_step_id = ready.sorted('sequence')[:1]
                continue
            job.current_step_id = False

    @api.model_create_multi
    def create(self, vals_list):
        for vals in vals_list:
            if vals.get('name', _('New')) == _('New'):
                vals['name'] = self.env['ir.sequence'].next_by_code('fp.job') or _('New')
        return super().create(vals_list)

    # ------------------------------------------------------------------
    # State machine — actions
    # ------------------------------------------------------------------
    # TODO(fp.job state-machine completeness): action_hold, action_resume,
    # action_revert_to_confirmed (rework path) — to be added when shopfloor
    # / rework workflows are wired up. For now, draft → confirmed and the
    # cancel paths are the only enforced transitions; everything else is
    # an explicit `state` write by privileged code.
    def action_confirm(self):
        for job in self:
            if job.state != 'draft':
                raise UserError(_(
                    "Job %s is in state '%s' - only draft jobs can be confirmed."
                ) % (job.name, job.state))
            job.state = 'confirmed'
        # Step auto-promote happens in the fusion_plating_jobs override
        # AFTER _generate_steps_from_recipe runs — at this point step_ids
        # is empty for any newly-confirmed job.
        return True

    def action_cancel(self):
        for job in self:
            if job.state == 'done':
                raise UserError(_(
                    "Job %s is done — cannot cancel."
                ) % job.name)
            if job.state == 'cancelled':
                raise UserError(_(
                    "Job %s is already cancelled."
                ) % job.name)
            job.state = 'cancelled'
        return True