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

from datetime import timedelta
from odoo import models, fields, api


class ContactEvent(models.Model):
    _name = 'contact.event'
    _description = 'Contact Event'
    _order = 'date_start desc'
    _inherit = ['mail.thread', 'mail.activity.mixin']
    
    contact_id = fields.Many2one(
        'dsrpt.contact', 
        string='Contact',
        required=True, 
        ondelete='cascade',
        tracking=True
    )
    date_start = fields.Datetime(
        string='Date & Time', 
        required=True, 
        default=fields.Datetime.now,
        tracking=True
    )
    duration = fields.Float(
        string='Duration (hours)', 
        default=1.0,
        tracking=True
    )
    user_id = fields.Many2one(
        'res.users', 
        string='Responsible',
        default=lambda self: self.env.user,
        tracking=True
    )
    calendar_event_id = fields.Many2one(
        'calendar.event', 
        string='Calendar Event',
        readonly=True
    )
    notes = fields.Text(string='Notes', required=True, tracking=True)
    
    @api.model_create_multi
    def create(self, vals_list):
        records = super().create(vals_list)
        for record in records:
            # Get base URL for creating contact link
            base_url = self.env['ir.config_parameter'].sudo().get_param('web.base.url', 'http://localhost:8069')
            contact_url = f"{base_url}/web#id={record.contact_id.id}&model=dsrpt.contact&view_type=form"
            
            # Prepare description with contact link
            description = f"📱 Contact in Odoo: {contact_url}\n\n"
            if record.notes:
                description += record.notes
            
            calendar_event = self.env['calendar.event'].create({
                'name': f"[{record.contact_id.name}] {record.notes[:50] if record.notes else 'Event'}",
                'start': record.date_start,
                'stop': record.date_start + timedelta(hours=record.duration),
                'user_id': record.user_id.id,
                'partner_ids': [(6, 0, [record.user_id.partner_id.id])] if record.user_id and record.user_id.partner_id else [],
                'description': description,
            })
            record.calendar_event_id = calendar_event.id
        
        # Update next_contact for affected contacts with the event date
        for record in records:
            record.contact_id._update_next_contact(record.date_start)
        
        return records
    
    def write(self, vals):
        result = super().write(vals)
        
        # Update calendar event if needed
        for record in self:
            if record.calendar_event_id:
                update_vals = {}
                if 'notes' in vals or 'contact_id' in vals:
                    update_vals['name'] = f"[{record.contact_id.name}] {record.notes[:50] if record.notes else 'Event'}"
                if 'date_start' in vals:
                    update_vals['start'] = record.date_start
                    update_vals['stop'] = record.date_start + timedelta(hours=record.duration)
                if 'duration' in vals:
                    update_vals['stop'] = record.date_start + timedelta(hours=record.duration)
                if 'user_id' in vals:
                    update_vals['user_id'] = record.user_id.id
                    update_vals['partner_ids'] = [(6, 0, [record.user_id.partner_id.id])] if record.user_id and record.user_id.partner_id else []
                if 'notes' in vals or 'contact_id' in vals:
                    # Get base URL for creating contact link
                    base_url = self.env['ir.config_parameter'].sudo().get_param('web.base.url', 'http://localhost:8069')
                    contact_url = f"{base_url}/web#id={record.contact_id.id}&model=dsrpt.contact&view_type=form"
                    
                    # Prepare description with contact link
                    description = f"📱 Contact in Odoo: {contact_url}\n\n"
                    if record.notes:
                        description += record.notes
                    update_vals['description'] = description
                
                if update_vals:
                    record.calendar_event_id.write(update_vals)
        
        # Update next_contact for affected contacts if relevant fields changed
        if any(field in vals for field in ['date_start', 'contact_id']):
            for record in self:
                record.contact_id._update_next_contact(record.date_start)
        
        return result
    
    @api.ondelete(at_uninstall=False)
    def _unlink_calendar_events(self):
        for record in self:
            if record.calendar_event_id:
                record.calendar_event_id.unlink()
    
    def unlink(self):
        # Store contacts before deletion for clearing next_contact
        contacts = self.mapped('contact_id')
        result = super().unlink()
        # Clear next_contact for affected contacts after deletion
        for contact in contacts:
            contact._update_next_contact(None)
        return result