from odoo import models, fields, api

class ResConfigSettings(models.TransientModel):
    _inherit = 'res.config.settings'

    # ✅ CRITICAL FIX: Use Many2one to link to the singleton
    # This is the ONLY field the settings wizard needs to save explicitly
    khmer_theme_config_id = fields.Many2one(
        'custom.theme.config',
        string='Theme Configuration',
        required=True,
        default=lambda self: self._get_default_theme_config()
    )

    # ✅ Related Fields (Read/Write via the Many2one)
    # These will automatically update the linked record when the Many2one is saved
    khmer_font_file = fields.Binary(
        string="Custom Font File (.ttf)",
        related='khmer_theme_config_id.font_file',
        readonly=False
    )
    khmer_font_name = fields.Char(
        string="Font Family Name",
        related='khmer_theme_config_id.font_name',
        readonly=False
    )
    khmer_menu_bg_color = fields.Char(
        string="Menu Background Color",
        related='khmer_theme_config_id.menu_bg_color',
        readonly=False
    )
    khmer_menu_bg_image = fields.Binary(
        string="Menu Background Image",
        related='khmer_theme_config_id.menu_bg_image',
        readonly=False
    )
    khmer_is_responsive = fields.Boolean(
        string="Enable Mobile Responsiveness",
        related='khmer_theme_config_id.is_responsive',
        readonly=False
    )
    khmer_font_file_name = fields.Char(string="Font Filename", related='khmer_theme_config_id.font_file_name',
                                       readonly=False)

    @api.model
    def _get_default_theme_config(self):
        config = self.env['custom.theme.config'].search([], limit=1)
        if not config:
            config = self.env['custom.theme.config'].create({'name': 'Main Configuration'})
        return config.id