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

from odoo import _, api, fields, models
from odoo.exceptions import UserError

class LoyaltyProgram(models.Model):
    _name = 'loyalty.program'
    _inherit = ['loyalty.program', 'mail.thread', 'mail.activity.mixin']

    state = fields.Selection([
        ('draft', 'Draft'),
        ('pending', 'Pending Approval'),
        ('approved', 'Approved')
    ], default='draft', string='Status', tracking=True)

    def action_request_approval(self):
        for program in self:
            if program.state != 'draft':
                continue
            program.write({'state': 'pending'})
            program.message_post(body=_("Approval requested for this marketing program."))

    def action_approve(self):
        for program in self:
            if program.state != 'pending':
                continue
            
            # Check authorization
            target_company = program.company_id or self.env.company
            approver = target_company._get_marketing_program_approver()
            
            if approver:
                if self.env.user.id != approver.id:
                    raise UserError(_("Only the designated Marketing Program Approver (%s) can approve this program.") % approver.name)
            else:
                is_manager = self.env.user.has_group('pos_loyalty_marketing_access.group_marketing_manager')
                if not is_manager:
                    raise UserError(_("Only a Marketing Manager can approve this program as no designated approver is configured."))
            
            program.write({'state': 'approved'})
            program.message_post(body=_("Marketing program has been approved and is now active."))

    def action_reset_draft(self):
        for program in self:
            program.write({'state': 'draft'})
            program.message_post(body=_("Marketing program reset to Draft."))

    def write(self, vals):
        # If we are only modifying state, skip the write reset checks
        if len(vals) == 1 and 'state' in vals:
            return super().write(vals)

        # Skip reset logic if Odoo is installing/upgrading modules or explicitly bypassed
        if (self.env.context.get('install_mode') 
            or self.env.context.get('module')
            or self.env.context.get('no_marketing_reset')):
            return super().write(vals)

        # For modifications, check if they are in pending/approved state
        programs_to_reset = self.filtered(lambda p: p.state in ['pending', 'approved'])
        if programs_to_reset:
            vals['state'] = 'draft'
            for program in programs_to_reset:
                program.message_post(body=_("The marketing program was modified and has been reset to Draft status for re-approval."))

        return super().write(vals)