# -*- coding: utf-8 -*-
# Copyright 2026 Nexa Systems Inc.
# License OPL-1 (Odoo Proprietary License v1.0)
#
# Phase 3 — parallel job link on fp.certificate.
# Coexists with bridge_mrp's production_id link.
#
# v19.0.6.20.0 — surface the Fischerscope PDF on the cert form so
# operators can SEE that the thickness report will be (or has been)
# merged into the CoC. The merge logic itself lives in
# fusion_plating_certificates/models/fp_certificate.py — this file
# only adds the human-readable indicators.

from odoo import api, fields, models


class FpCertificate(models.Model):
    _inherit = 'fp.certificate'

    x_fc_job_id = fields.Many2one(
        'fp.job',
        string='Work Order',
        index=True,
        help="Native fp.job link. Coexists with bridge_mrp's production_id.",
    )

    # ---- Fischerscope thickness-PDF visibility (S19) ---------------------
    # These three fields are computed from the linked job's QC checks so
    # the cert form can show the operator BEFORE issuing whether a
    # Fischerscope report is on file and will be appended as page 2.
    x_fc_thickness_qc_id = fields.Many2one(
        'fusion.plating.quality.check',
        string='Linked QC (Thickness)',
        compute='_compute_fischer_visibility',
        help='Quality check on the linked plating job that has a '
             'Fischerscope / XDAL 600 thickness PDF uploaded. Used to '
             'merge that PDF into the CoC on Issue.',
    )
    x_fc_thickness_pdf_id = fields.Many2one(
        'ir.attachment',
        string='Fischerscope PDF',
        compute='_compute_fischer_visibility',
        help='Thickness report PDF that will be appended as page 2 of '
             'the CoC when the certificate is issued.',
    )
    x_fc_thickness_status = fields.Selection(
        [
            ('none', 'No PDF Uploaded'),
            ('pending', 'Will Append on Issue'),
            ('merged', 'Merged into CoC'),
        ],
        string='Thickness Report',
        compute='_compute_fischer_visibility',
        help='none = QC has no Fischerscope upload · '
             'pending = will be appended when Issue is clicked · '
             'merged = already in the issued CoC PDF',
    )

    @api.depends('x_fc_job_id', 'state', 'message_ids', 'attachment_id',
                 'x_fc_local_thickness_pdf')
    def _compute_fischer_visibility(self):
        QC = self.env.get('fusion.plating.quality.check')
        empty_qc = self.env['fusion.plating.quality.check'] if QC is not None else None
        empty_att = self.env['ir.attachment']
        for rec in self:
            qc = empty_qc
            pdf = empty_att
            status = 'none'
            # Cert-local upload wins over QC-side PDF (matches the
            # merge resolution order in fp_certificate.py).
            if rec.x_fc_local_thickness_pdf:
                if rec.state == 'issued' and rec.attachment_id:
                    status = 'merged'
                else:
                    status = 'pending'
            elif QC is not None and rec.x_fc_job_id:
                # Same lookup the merge method uses — passed-first,
                # then any QC with a PDF.
                qc = QC.sudo().search([
                    ('job_id', '=', rec.x_fc_job_id.id),
                    ('state', '=', 'passed'),
                    ('thickness_report_pdf_id', '!=', False),
                ], order='completed_at desc', limit=1)
                if not qc:
                    qc = QC.sudo().search([
                        ('job_id', '=', rec.x_fc_job_id.id),
                        ('thickness_report_pdf_id', '!=', False),
                    ], order='create_date desc', limit=1)
                if qc and qc.thickness_report_pdf_id:
                    pdf = qc.thickness_report_pdf_id
                    if rec.state == 'issued' and rec.attachment_id:
                        status = 'merged'
                    else:
                        status = 'pending'
            rec.x_fc_thickness_qc_id = qc or empty_qc
            rec.x_fc_thickness_pdf_id = pdf or empty_att
            rec.x_fc_thickness_status = status

    def action_view_thickness_qc(self):
        """Smart-button target — open the linked QC for inspection."""
        self.ensure_one()
        if not self.x_fc_thickness_qc_id:
            return False
        return {
            'type': 'ir.actions.act_window',
            'name': self.x_fc_thickness_qc_id.name,
            'res_model': 'fusion.plating.quality.check',
            'res_id': self.x_fc_thickness_qc_id.id,
            'view_mode': 'form',
            'target': 'current',
        }

    def action_open_job(self):
        """Smart-button target — open the linked plating job."""
        self.ensure_one()
        if not self.x_fc_job_id:
            return False
        return {
            'type': 'ir.actions.act_window',
            'name': self.x_fc_job_id.name,
            'res_model': 'fp.job',
            'res_id': self.x_fc_job_id.id,
            'view_mode': 'form',
            'target': 'current',
        }

    # ---- Parse-on-upload for the cert-form Fischerscope field (2026-05-28)
    # The Issue Certs wizard parses .doc/.docx/RTF Fischerscope exports into
    # readings + metadata + microscope image. Dropping the same file straight
    # onto the cert form's x_fc_local_thickness_pdf field did nothing — it
    # just stored the bytes. These hooks give the form the SAME behaviour as
    # the wizard: on save, a non-PDF upload is parsed and relocated to the
    # evidence field (a real PDF is left in place to merge as page 2).

    @api.model_create_multi
    def create(self, vals_list):
        recs = super().create(vals_list)
        for rec in recs:
            if (rec.x_fc_local_thickness_pdf
                    and not self.env.context.get('fp_skip_thickness_parse')):
                rec._fp_parse_local_thickness_upload()
        return recs

    def write(self, vals):
        res = super().write(vals)
        if (vals.get('x_fc_local_thickness_pdf')
                and not self.env.context.get('fp_skip_thickness_parse')):
            for rec in self:
                rec._fp_parse_local_thickness_upload()
        return res

    def _fp_parse_local_thickness_upload(self):
        """Parse a Fischerscope .doc/.docx/RTF dropped on the cert form's
        x_fc_local_thickness_pdf field, exactly like the Issue Certs wizard:
        extract readings → thickness_reading_ids, header metadata →
        x_fc_thickness_* fields, microscope image → x_fc_thickness_image_id,
        then relocate the non-PDF source to x_fc_local_thickness_evidence_id
        and clear the PDF field (so the page-2 merge doesn't choke on it).

        A real PDF is left in place — it merges as page 2 of the CoC on
        Issue and carries no parseable readings. Unknown non-PDF types are
        left untouched.
        """
        import base64
        from datetime import datetime
        self.ensure_one()
        if not self.x_fc_local_thickness_pdf:
            return
        try:
            raw = base64.b64decode(self.x_fc_local_thickness_pdf)
        except Exception:
            return
        # Real PDF → leave it (merges as page 2). XDAL 600 names RTF files
        # ".doc"; detect by magic bytes, not extension (see CLAUDE.md).
        if raw[:4] == b'%PDF':
            return
        name = (self.x_fc_local_thickness_pdf_filename or '').lower()
        is_rtf = raw[:5] == b'{\\rtf'
        is_docx = name.endswith('.docx')
        if not (is_rtf or is_docx):
            return  # unknown non-PDF — don't guess

        from ..wizards.fp_cert_issue_wizard import (
            _fp_parse_fischerscope_rtf, _fp_parse_fischerscope_docx,
            _fp_extract_rtf_images, _fp_pick_microscope_image,
        )
        parsed = (_fp_parse_fischerscope_rtf(raw) if is_rtf
                  else _fp_parse_fischerscope_docx(raw))

        vals = {}
        for fname, fval in (
            ('x_fc_thickness_operator',    parsed.get('operator')),
            ('x_fc_thickness_product',     parsed.get('product')),
            ('x_fc_thickness_directory',   parsed.get('directory')),
            ('x_fc_thickness_application', parsed.get('application')),
            ('x_fc_thickness_measuring_time_sec',
                parsed.get('measuring_time_sec') or 0),
            ('x_fc_thickness_equipment',
                parsed.get('equipment') or 'Fischerscope XDAL 600'),
            ('x_fc_thickness_source_filename',
                self.x_fc_local_thickness_pdf_filename or ''),
        ):
            if fname in self._fields and fval:
                vals[fname] = fval

        date_str = (parsed.get('date_str') or '').strip()
        time_str = (parsed.get('time_str') or '').strip()
        if date_str and 'x_fc_thickness_datetime' in self._fields:
            combined = ('%s %s' % (date_str, time_str)).strip()
            for fmt in (
                '%m/%d/%Y %I:%M:%S %p', '%m/%d/%Y %I:%M %p',
                '%m/%d/%Y %H:%M:%S',    '%m/%d/%Y %H:%M', '%m/%d/%Y',
            ):
                try:
                    vals['x_fc_thickness_datetime'] = datetime.strptime(
                        combined, fmt,
                    )
                    break
                except ValueError:
                    continue

        # Readings — replace any existing set with the freshly-parsed rows
        # (the uploaded report is authoritative for this cert).
        readings = parsed.get('readings') or []
        Reading = self.env.get('fp.thickness.reading')
        if readings and Reading is not None:
            calibration = parsed.get('calibration') or ''
            cmds = [(5, 0, 0)]
            for i, (nip, ni, p) in enumerate(readings):
                rvals = {'nip_mils': nip, 'ni_percent': ni, 'p_percent': p}
                if 'reading_number' in Reading._fields:
                    rvals['reading_number'] = i + 1
                if calibration and 'calibration_std_ref' in Reading._fields:
                    rvals['calibration_std_ref'] = calibration
                cmds.append((0, 0, rvals))
            vals['thickness_reading_ids'] = cmds

        # Relocate the non-PDF source to the evidence slot + clear the PDF
        # field (mirrors the wizard's non-PDF end state).
        att = self.env['ir.attachment'].sudo().create({
            'name':      self.x_fc_local_thickness_pdf_filename or 'fischerscope-report',
            'type':      'binary',
            'datas':     self.x_fc_local_thickness_pdf,
            'res_model': self._name,
            'res_id':    self.id,
        })
        if 'x_fc_local_thickness_evidence_id' in self._fields:
            vals['x_fc_local_thickness_evidence_id'] = att.id
        vals['x_fc_local_thickness_pdf'] = False
        vals['x_fc_local_thickness_pdf_filename'] = False

        # Microscope image (RTF only — .docx images need a different path).
        if is_rtf and 'x_fc_thickness_image_id' in self._fields:
            try:
                pngs = _fp_extract_rtf_images(raw)
                img_bytes, img_w, img_h = _fp_pick_microscope_image(pngs)
                if img_bytes:
                    img_att = self.env['ir.attachment'].sudo().create({
                        'name': '%s-microscope.png' % (
                            (self.x_fc_local_thickness_pdf_filename
                             or 'fischerscope').rsplit('.', 1)[0]
                        ),
                        'type':      'binary',
                        'datas':     base64.b64encode(img_bytes),
                        'mimetype':  'image/png',
                        'res_model': self._name,
                        'res_id':    self.id,
                    })
                    vals['x_fc_thickness_image_id'] = img_att.id
            except Exception:
                pass

        self.with_context(fp_skip_thickness_parse=True).write(vals)
        from markupsafe import Markup
        from odoo import _
        self.message_post(body=Markup(_(
            'Fischerscope file <b>%s</b> parsed from the cert form: '
            '%d reading(s) extracted.'
        )) % (
            self.x_fc_thickness_source_filename or name or 'unnamed',
            len(readings),
        ))