# -*- coding: utf-8 -*-

from odoo import api, fields, models, _


class WheelchairConfigFlowNode(models.Model):
    _name = 'fusion.wc.config.flow.node'
    _description = 'Configuration Flow Node'
    _order = 'sequence, id'

    flow_id = fields.Many2one('fusion.wc.config.flow', string='Flow',
        required=True, ondelete='cascade', index=True)

    name = fields.Char(string='Name', required=True, default='New Node')
    sequence = fields.Integer(default=10)

    node_type = fields.Selection([
        ('start', 'Start'),
        ('end', 'End'),
        ('decision', 'Decision (If/Then)'),
        ('option_group', 'Option Group'),
        ('product_select', 'Product Selection'),
        ('measurement_check', 'Measurement Check'),
        ('action', 'Action (Enable/Disable/Require)'),
    ], string='Type', required=True, default='action')

    # Canvas position
    pos_x = fields.Float(string='X Position', default=100.0)
    pos_y = fields.Float(string='Y Position', default=100.0)

    # Visual
    color = fields.Char(string='Color', default='#3b82f6')
    icon = fields.Char(string='Icon', default='fa-circle')

    # Extensible config for type-specific settings
    config_json = fields.Text(string='Configuration', default='{}',
        help='Type-specific configuration as JSON')

    # Link to existing section
    section_id = fields.Many2one('fusion.wc.section', string='Section',
        help='Link this node to a wheelchair section')

    # Node options (for option_group / product_select)
    node_option_ids = fields.One2many('fusion.wc.config.flow.node.option',
        'node_id', string='Options')

    # ── Decision node fields ──
    decision_field = fields.Selection([
        ('equipment_type', 'Equipment Type'),
        ('wheelchair_type', 'Wheelchair Category'),
        ('powerchair_type', 'Power Chair Category'),
        ('build_type', 'Build Type'),
        ('client_type', 'Client Type'),
        ('reason_for_application', 'Reason for Application'),
        ('seat_width', 'Seat Width (inches)'),
        ('seat_depth', 'Seat Depth (inches)'),
        ('client_weight', 'Client Weight (lbs)'),
        ('back_height', 'Back Height (inches)'),
        ('seat_to_floor', 'Seat to Floor Height (inches)'),
        ('leg_rest_length', 'Leg Rest Length (inches)'),
        ('custom', 'Custom Expression'),
        ('custom_field', 'Custom Field (from equipment data)'),
    ], string='Decision Field')

    custom_field_name = fields.Char(string='Custom Field Name',
        help='JSON key to check in equipment_data_json (for custom_field decisions)')

    decision_operator = fields.Selection([
        ('eq', '='),
        ('neq', '!='),
        ('gt', '>'),
        ('gte', '>='),
        ('lt', '<'),
        ('lte', '<='),
        ('in', 'In List'),
    ], string='Operator')

    decision_value = fields.Char(string='Expected Value',
        help='For "In List" use comma-separated values')

    # ── Measurement check fields (reuses upcharge rule pattern) ──
    measurement_field = fields.Selection([
        ('seat_width', 'Seat Width'),
        ('seat_depth', 'Seat Depth'),
        ('back_width', 'Backrest Width'),
        ('back_height', 'Back Height'),
        ('seat_to_floor', 'Seat to Floor Height'),
        ('leg_rest_length', 'Leg Rest Length'),
        ('client_weight', 'Client Weight'),
    ], string='Measurement')

    comparison = fields.Selection([
        ('gt', 'Greater Than'),
        ('gte', 'Greater Than or Equal'),
        ('lt', 'Less Than'),
        ('eq', 'Equal To'),
        ('neq', 'Not Equal To'),
    ], string='Comparison')

    threshold_value = fields.Float(string='Threshold')

    # ── Action node fields ──
    action_type = fields.Selection([
        ('enable', 'Enable Options'),
        ('disable', 'Disable Options'),
        ('require', 'Require Options'),
        ('skip_step', 'Skip Portal Step'),
        ('set_value', 'Set Field Value'),
    ], string='Action Type')

    target_option_ids = fields.Many2many(
        'fusion.wc.section.option',
        'wc_flow_node_target_option_rel',
        'node_id', 'option_id',
        string='Target Options',
        help='Section options affected by this action')

    target_step = fields.Integer(string='Target Step',
        help='Portal form step number to skip (for skip_step action)')

    # ── Connections (computed for convenience) ──
    outgoing_connection_ids = fields.One2many(
        'fusion.wc.config.flow.connection', 'source_node_id',
        string='Outgoing Connections')
    incoming_connection_ids = fields.One2many(
        'fusion.wc.config.flow.connection', 'target_node_id',
        string='Incoming Connections')