# -*- coding: utf-8 -*-
# Part of Odoo. See LICENSE file for full copyright and licensing details.

import hashlib

from odoo import api, models
from odoo.tools import pycompat
from odoo.tools import html_escape as escape


class Image(models.AbstractModel):
    """
    Widget options:

    ``class``
        set as attribute on the generated <img> tag
    """
    _name = 'ir.qweb.field.image'
    _inherit = 'ir.qweb.field.image'

    @api.model
    def record_to_html(self, record, field_name, options):
        assert options['tagName'] != 'img',\
            "Oddly enough, the root tag of an image field can not be img. " \
            "That is because the image goes into the tag, or it gets the " \
            "hose again."

        if options.get('qweb_img_raw_data', False):
            return super(Image, self).record_to_html(record, field_name, options)

        aclasses = ['img', 'img-responsive'] if options.get('qweb_img_responsive', True) else ['img']
        aclasses += options.get('class', '').split()
        classes = ' '.join(pycompat.imap(escape, aclasses))

        max_size = None
        if options.get('resize'):
            max_size = options.get('resize')
        else:
            max_width, max_height = options.get('max_width', 0), options.get('max_height', 0)
            if max_width or max_height:
                max_size = '%sx%s' % (max_width, max_height)

        sha = hashlib.sha1(getattr(record, '__last_update').encode('utf-8')).hexdigest()[0:7]
        max_size = '' if max_size is None else '/%s' % max_size
        avoid_if_small = '&avoid_if_small=true' if options.get('avoid_if_small') else ''
        src = '/web/image/%s/%s/%s%s?unique=%s%s' % (record._name, record.id, field_name, max_size, sha, avoid_if_small)

        alt = None
        if options.get('alt-field') and getattr(record, options['alt-field'], None):
            alt = escape(record[options['alt-field']])
        elif options.get('alt'):
            alt = options['alt']

        src_zoom = None
        if options.get('zoom') and getattr(record, options['zoom'], None):
            src_zoom = '/web/image/%s/%s/%s%s?unique=%s' % (record._name, record.id, options['zoom'], max_size, sha)
        elif options.get('zoom'):
            src_zoom = options['zoom']

        img = '<img class="%s" src="%s" style="%s"%s%s/>' % \
            (classes, src, options.get('style', ''), ' alt="%s"' % alt if alt else '', ' data-zoom="1" data-zoom-image="%s"' % src_zoom if src_zoom else '')
        return pycompat.to_text(img)
