# Copyright 2018 Akretion (http://www.akretion.com)
# @author: Alexis de Lattre <alexis.delattre@akretion.com>
# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).

from odoo import api, fields, models, _
from odoo.exceptions import ValidationError
import logging
logger = logging.getLogger(__name__)


class Py3oPdfOptions(models.Model):
    _name = 'py3o.pdf.options'
    _description = 'Define PDF export options for Libreoffice'

    name = fields.Char(required=True)
    # GENERAL TAB
    # UseLosslessCompression (bool)
    image_compression = fields.Selection([
        ('lossless', 'Lossless Compression'),
        ('jpeg', 'JPEG Compression'),
        ], string='Image Compression', default='jpeg')
    # Quality (int)
    image_jpeg_quality = fields.Integer(
        string='Image JPEG Quality', default=90,
        help="Enter a percentage between 0 and 100.")
    # ReduceImageResolution (bool) and MaxImageResolution (int)
    image_reduce_resolution = fields.Selection([
        ('none', 'Disable'),
        ('75', '75 DPI'),
        ('150', '150 DPI'),
        ('300', '300 DPI'),
        ('600', '600 DPI'),
        ('1200', '1200 DPI'),
        ], string='Reduce Image Resolution', default='300')
    watermark = fields.Boolean('Sign With Watermark')
    # Watermark (string)
    watermark_text = fields.Char('WaterMark Text')
    # UseTaggedPDF (bool)
    tagged_pdf = fields.Boolean('Tagged PDF (add document structure)')
    # SelectPdfVersion (int)
    # 0 = PDF 1.4 (default selection).
    # 1 = PDF/A-1 (ISO 19005-1:2005)
    pdfa = fields.Boolean(
        'Archive PDF/A-1a (ISO 19005-1)',
        help="If you enable this option, you will not be able to "
        "password-protect the document or apply other security settings.")
    #  ExportFormFields (bool)
    pdf_form = fields.Boolean('Create PDF Form', default=True)
    # FormsType (int)
    pdf_form_format = fields.Selection([
        ('0', 'FDF'),
        ('1', 'PDF'),
        ('2', 'HTML'),
        ('3', 'XML'),
        ], string='Submit Format', default='0')
    # AllowDuplicateFieldNames (bool)
    pdf_form_allow_duplicate = fields.Boolean('Allow Duplicate Field Names')
    # ExportBookmarks (bool)
    export_bookmarks = fields.Boolean('Export Bookmarks', default=True)
    # ExportPlaceholders (bool)
    export_placeholders = fields.Boolean('Export Placeholders', default=True)
    # ExportNotes (bool)
    export_comments = fields.Boolean('Export Comments')
    # ExportHiddenSlides (bool) ??
    export_hidden_slides = fields.Boolean(
        'Export Automatically Insered Blank Pages')
    # Doesn't make sense to have the option "View PDF after export" ! :)
    # INITIAL VIEW TAB
    # InitialView (int)
    initial_view = fields.Selection([
        ('0', 'Page Only'),
        ('1', 'Bookmarks and Page'),
        ('2', 'Thumbnails and Page'),
        ], string='Panes', default='0')
    # InitialPage (int)
    initial_page = fields.Integer(string='Initial Page', default=1)
    # Magnification (int)
    magnification = fields.Selection([
        ('0', 'Default'),
        ('1', 'Fit in Window'),
        ('2', 'Fit Width'),
        ('3', 'Fit Visible'),
        ('4', 'Zoom'),
        ], string='Magnification', default='0')
    # Zoom (int)
    zoom = fields.Integer(
        string='Zoom Factor', default=100,
        help='Possible values: from 50 to 1600')
    # PageLayout (int)
    page_layout = fields.Selection([
        ('0', 'Default'),
        ('1', 'Single Page'),
        ('2', 'Continuous'),
        ('3', 'Continuous Facing'),
        ], string='Page Layout', default='0')
    # USER INTERFACE TAB
    # ResizeWindowToInitialPage (bool)
    resize_windows_initial_page = fields.Boolean(
        string='Resize Windows to Initial Page')
    # CenterWindow (bool)
    center_window = fields.Boolean(string='Center Window on Screen')
    # OpenInFullScreenMode (bool)
    open_fullscreen = fields.Boolean(string='Open in Full Screen Mode')
    # DisplayPDFDocumentTitle (bool)
    display_document_title = fields.Boolean(string='Display Document Title')
    # HideViewerMenubar (bool)
    hide_menubar = fields.Boolean(string='Hide Menubar')
    # HideViewerToolbar (bool)
    hide_toolbar = fields.Boolean(string='Hide Toolbar')
    # HideViewerWindowControls (bool)
    hide_window_controls = fields.Boolean(string='Hide Windows Controls')
    # OpenBookmarkLevels (int)  -1 = all (default)  from 1 to 10
    open_bookmark_levels = fields.Selection([
        ('-1', 'All Levels'),
        ('1', '1'),
        ('2', '2'),
        ('3', '3'),
        ('4', '4'),
        ('5', '5'),
        ('6', '6'),
        ('7', '7'),
        ('8', '8'),
        ('9', '9'),
        ('10', '10'),
        ], default='-1', string='Visible Bookmark Levels')
    # LINKS TAB
    # ExportBookmarksToPDFDestination (bool)
    export_bookmarks_named_dest = fields.Boolean(
        string='Export Bookmarks as Named Destinations')
    # ConvertOOoTargetToPDFTarget (bool)
    convert_doc_ref_to_pdf_target = fields.Boolean(
        string='Convert Document References to PDF Targets')
    # ExportLinksRelativeFsys (bool)
    export_filesystem_urls = fields.Boolean(
        string='Export URLs Relative to Filesystem')
    # PDFViewSelection -> mnDefaultLinkAction (int)
    cross_doc_link_action = fields.Selection([
        ('0', 'Default'),
        ('1', 'Open with PDF Reader Application'),
        ('2', 'Open with Internet Browser'),
        ], string='Cross-document Links', default='0')
    # SECURITY TAB
    # EncryptFile (bool)
    encrypt = fields.Boolean('Encrypt')
    # DocumentOpenPassword (char)
    document_password = fields.Char(string='Document Password')
    # RestrictPermissions (bool)
    restrict_permissions = fields.Boolean('Restrict Permissions')
    # PermissionPassword (char)
    permission_password = fields.Char(string='Permission Password')
    # TODO PreparedPasswords  + PreparedPermissionPassword
    # I don't see those fields in the LO interface !
    # But they are used in the LO code...
    # Printing (int)
    printing = fields.Selection([
        ('0', 'Not Permitted'),
        ('1', 'Low Resolution (150 dpi)'),
        ('2', 'High Resolution'),
        ], string='Printing', default='2')
    # Changes (int)
    changes = fields.Selection([
        ('0', 'Not Permitted'),
        ('1', 'Inserting, Deleting and Rotating Pages'),
        ('2', 'Filling in Form Fields'),
        ('3', 'Commenting, Filling in Form Fields'),
        ('4', 'Any Except Extracting Pages'),
        ], string='Changes', default='4')
    # EnableCopyingOfContent (bool)
    content_copying_allowed = fields.Boolean(
        string='Enable Copying of Content', default=True)
    # EnableTextAccessForAccessibilityTools (bool)
    text_access_accessibility_tools_allowed = fields.Boolean(
        string='Enable Text Access for Accessibility Tools', default=True)
    # DIGITAL SIGNATURE TAB
    # This will be possible but not easy
    # Because the certificate parameter is a pointer to a certificate
    # already registered in LO
    # On Linux LO reuses the Mozilla certificate store (on Windows the
    # one from Windows)
    # But there seems to be some possibilities to send this certificate via API
    # It seems you can add temporary certificates during runtime:
    # https://api.libreoffice.org/docs/idl/ref/interfacecom_1_1sun_1_1star_1_1security_1_1XCertificateContainer.html
    # Here is an API to retrieve the known certificates:
    # https://api.libreoffice.org/docs/idl/ref/interfacecom_1_1sun_1_1star_1_1xml_1_1crypto_1_1XSecurityEnvironment.html
    # Thanks to 'samuel_m' on libreoffice-dev IRC chan for pointing me to this

    @api.constrains(
        'image_jpeg_quality', 'initial_page', 'pdfa',
        'cross_doc_link_action', 'magnification', 'zoom')
    def check_pdf_options(self):
        for opt in self:
            if opt.image_jpeg_quality > 100 or opt.image_jpeg_quality < 1:
                raise ValidationError(_(
                    "The parameter Image JPEG Quality must be between 1 %%"
                    " and 100 %% (current value: %s %%)")
                    % opt.image_jpeg_quality)
            if opt.initial_page < 1:
                raise ValidationError(_(
                    "The initial page parameter must be strictly positive "
                    "(current value: %d)") % opt.initial_page)
            if opt.pdfa and opt.cross_doc_link_action == '1':
                raise ValidationError(_(
                    "The PDF/A option is not compatible with "
                    "'Cross-document Links' = "
                    "'Open with PDF Reader Application'."))
            if opt.magnification == '4' and (opt.zoom < 50 or opt.zoom > 1600):
                raise ValidationError(_(
                    "The value of the zoom factor must be between 50 and 1600 "
                    "(current value: %d)") % opt.zoom)

    @api.onchange('encrypt')
    def encrypt_change(self):
        if not self.encrypt:
            self.document_password = False

    @api.onchange('restrict_permissions')
    def restrict_permissions_change(self):
        if not self.restrict_permissions:
            self.permission_password = False

    @api.onchange('pdfa')
    def pdfa_change(self):
        if self.pdfa:
            self.pdf_form = False
            self.encrypt = False
            self.restrict_permissions = False

    def odoo2libreoffice_options(self):
        self.ensure_one()
        options = {}
        # GENERAL TAB
        if self.image_compression == 'lossless':
            options['UseLosslessCompression'] = True
        else:
            options['UseLosslessCompression'] = False
            options['Quality'] = self.image_jpeg_quality
        if self.image_reduce_resolution != 'none':
            options['ReduceImageResolution'] = True
            options['MaxImageResolution'] = int(self.image_reduce_resolution)
        else:
            options['ReduceImageResolution'] = False
        if self.watermark and self.watermark_text:
            options['Watermark'] = self.watermark_text
        if self.pdfa:
            options['SelectPdfVersion'] = 1
            options['UseTaggedPDF'] = self.tagged_pdf
        else:
            options['SelectPdfVersion'] = 0
        if self.pdf_form and self.pdf_form_format and not self.pdfa:
            options['ExportFormFields'] = True
            options['FormsType'] = int(self.pdf_form_format)
            options['AllowDuplicateFieldNames'] = self.pdf_form_allow_duplicate
        else:
            options['ExportFormFields'] = False

        options.update({
            'ExportBookmarks': self.export_bookmarks,
            'ExportPlaceholders': self.export_placeholders,
            'ExportNotes': self.export_comments,
            'ExportHiddenSlides': self.export_hidden_slides,
            })

        # INITIAL VIEW TAB
        options.update({
            'InitialView': int(self.initial_view),
            'InitialPage': self.initial_page,
            'Magnification': int(self.magnification),
            'PageLayout': int(self.page_layout),
            })

        if self.magnification == '4':
            options['Zoom'] = self.zoom

        # USER INTERFACE TAB
        options.update({
            'ResizeWindowToInitialPage': self.resize_windows_initial_page,
            'CenterWindow': self.center_window,
            'OpenInFullScreenMode': self.open_fullscreen,
            'DisplayPDFDocumentTitle': self.display_document_title,
            'HideViewerMenubar': self.hide_menubar,
            'HideViewerToolbar': self.hide_toolbar,
            'HideViewerWindowControls': self.hide_window_controls,
            })

        if self.open_bookmark_levels:
            options['OpenBookmarkLevels'] = int(self.open_bookmark_levels)

        # LINKS TAB
        options.update({
            'ExportBookmarksToPDFDestination':
            self.export_bookmarks_named_dest,
            'ConvertOOoTargetToPDFTarget': self.convert_doc_ref_to_pdf_target,
            'ExportLinksRelativeFsys': self.export_filesystem_urls,
            'PDFViewSelection': int(self.cross_doc_link_action),
            })

        # SECURITY TAB
        if not self.pdfa:
            if self.encrypt and self.document_password:
                options['EncryptFile'] = True
                options['DocumentOpenPassword'] = self.document_password
            if self.restrict_permissions and self.permission_password:
                options.update({
                    'RestrictPermissions': True,
                    'PermissionPassword': self.permission_password,
                    'Printing': int(self.printing),
                    'Changes': int(self.changes),
                    'EnableCopyingOfContent': self.content_copying_allowed,
                    'EnableTextAccessForAccessibilityTools':
                    self.text_access_accessibility_tools_allowed,
                    })

        logger.debug(
            'Py3o PDF options ID %s converted to %s', self.id, options)
        return options