from odoo import api, fields, models


class DocumentsShareAccess(models.TransientModel):
    _name = 'documents.sharing.access'
    _description = "Documents share access"

    documents_sharing_id = fields.Many2one('documents.sharing', 'Documents share', ondelete='cascade')
    partner_id = fields.Many2one('res.partner', ondelete='cascade')

    # Rights edition
    role = fields.Selection('_get_role_options', string='Role', required=True)
    expiration_date = fields.Datetime('Expiration')
    original_expiration_date = fields.Datetime('Original Expiration')
    is_deleted = fields.Boolean()

    # Additional readonly fields for displaying information
    partner_is_me = fields.Boolean(string="Is me", compute="_compute_partner_is_me")

    # Edition flags
    has_user = fields.Boolean(compute='_compute_has_user')
    has_warning_no_access = fields.Boolean(compute="_compute_has_warning_no_access")
    is_on_single_document = fields.Boolean(compute="_compute_is_on_single_document")
    is_readonly = fields.Boolean(related="documents_sharing_id.is_readonly")

    @api.model
    def _get_role_options(self):
        return self.env['documents.sharing']._get_role_options()

    @api.depends_context('uid')
    @api.depends('partner_id')
    def _compute_partner_is_me(self):
        me = self.env.user.partner_id
        for record in self:
            record.partner_is_me = record.partner_id == me

    @api.depends('documents_sharing_id.document_ids')
    def _compute_is_on_single_document(self):
        for record in self:
            record.is_on_single_document = record.documents_sharing_id.is_single

    @api.depends('partner_id.user_ids')
    def _compute_has_user(self):
        for record in self:
            record.has_user = bool(record.partner_id.user_ids)

    @api.depends('documents_sharing_id.access_via_link', 'documents_sharing_id.invite_partner_ids',
                 'partner_id.user_ids', 'is_deleted')
    def _compute_has_warning_no_access(self):
        for record in self:
            record.has_warning_no_access = (
                    not record.documents_sharing_id.invite_partner_ids  # we are modifying rights not inviting
                    and record.documents_sharing_id.access_via_link.endswith('none')
                    and not record.has_user
                    and not record.is_deleted)