# -*- coding: utf-8 -*-
# Copyright 2026 Nexa Systems Inc.
# License OPL-1 (Odoo Proprietary License v1.0)

from odoo import models, fields, api


class FusionApiProvider(models.Model):
    _name = 'fusion.api.provider'
    _description = 'API Service Provider'
    _order = 'sequence, name'

    name = fields.Char(required=True)
    provider_type = fields.Selection([
        ('openai', 'OpenAI'),
        ('anthropic', 'Anthropic'),
        ('google_maps', 'Google Maps'),
        ('google_oauth', 'Google OAuth'),
        ('microsoft_oauth', 'Microsoft OAuth'),
        ('twilio', 'Twilio'),
        ('custom', 'Custom'),
    ], required=True, default='custom')
    status = fields.Selection([
        ('active', 'Active'),
        ('inactive', 'Inactive'),
        ('error', 'Error'),
    ], default='inactive', required=True, tracking=True)
    description = fields.Text()
    website_url = fields.Char(string='API Dashboard URL')
    sequence = fields.Integer(default=10)
    color = fields.Integer()
    icon_class = fields.Char(
        string='Icon CSS Class',
        help='Font Awesome class for display, e.g. fa-brain',
    )

    key_ids = fields.One2many('fusion.api.key', 'provider_id', string='API Keys')
    access_ids = fields.One2many('fusion.api.access', 'provider_id', string='Access Rules')

    active_key_count = fields.Integer(compute='_compute_key_stats', string='Active Keys')
    total_month_cost = fields.Float(compute='_compute_usage_stats', string='Month Cost (USD)')
    total_month_requests = fields.Integer(compute='_compute_usage_stats', string='Month Requests')

    company_id = fields.Many2one('res.company', default=lambda self: self.env.company)

    @api.depends('key_ids', 'key_ids.is_active')
    def _compute_key_stats(self):
        for rec in self:
            rec.active_key_count = len(rec.key_ids.filtered('is_active'))

    def _compute_usage_stats(self):
        today = fields.Date.today()
        month_start = today.replace(day=1)
        for rec in self:
            usages = self.env['fusion.api.usage'].sudo().search([
                ('provider_id', '=', rec.id),
                ('create_date', '>=', fields.Datetime.to_string(month_start)),
                ('status', '=', 'success'),
            ])
            rec.total_month_cost = sum(u.estimated_cost_usd for u in usages)
            rec.total_month_requests = len(usages)

    def action_activate(self):
        self.ensure_one()
        if not self.key_ids.filtered('is_active'):
            return {
                'type': 'ir.actions.client',
                'tag': 'display_notification',
                'params': {
                    'title': 'No Active Keys',
                    'message': 'Add at least one active API key before activating this provider.',
                    'type': 'warning',
                    'sticky': False,
                },
            }
        self.status = 'active'

    def action_deactivate(self):
        self.ensure_one()
        self.status = 'inactive'

    @api.model
    def get_dashboard_data(self):
        today = fields.Date.today()
        month_start = today.replace(day=1)

        providers = self.search([])
        consumers = self.env['fusion.api.consumer'].search([])

        month_usages = self.env['fusion.api.usage'].sudo().search([
            ('create_date', '>=', fields.Datetime.to_string(month_start)),
            ('status', '=', 'success'),
        ])
        today_usages = month_usages.filtered(
            lambda u: u.create_date.date() == today
        )

        month_cost = sum(u.estimated_cost_usd for u in month_usages)
        month_requests = len(month_usages)
        today_requests = len(today_usages)

        consumer_stats = {}
        for usage in month_usages:
            cid = usage.consumer_id.id
            if cid not in consumer_stats:
                consumer_stats[cid] = {
                    'name': usage.consumer_id.name,
                    'cost': 0.0,
                    'requests': 0,
                }
            consumer_stats[cid]['cost'] += usage.estimated_cost_usd
            consumer_stats[cid]['requests'] += 1

        top_consumers = sorted(
            consumer_stats.values(),
            key=lambda x: x['cost'],
            reverse=True,
        )[:5]

        provider_stats = []
        for prov in providers.filtered(lambda p: p.status == 'active'):
            prov_usages = month_usages.filtered(lambda u: u.provider_id.id == prov.id)
            provider_stats.append({
                'id': prov.id,
                'name': prov.name,
                'type': prov.provider_type,
                'cost': sum(u.estimated_cost_usd for u in prov_usages),
                'requests': len(prov_usages),
                'keys': prov.active_key_count,
            })

        recent = self.env['fusion.api.usage'].sudo().search(
            [], limit=10, order='create_date desc',
        )
        recent_list = [{
            'consumer': r.consumer_id.name or '',
            'provider': r.provider_id.name or '',
            'feature': r.feature or '',
            'cost': round(r.estimated_cost_usd, 6),
            'status': r.status,
            'tokens': r.total_tokens,
            'time': fields.Datetime.to_string(r.create_date),
        } for r in recent]

        approaching_limits = []
        access_rules = self.env['fusion.api.access'].sudo().search([
            ('monthly_budget_usd', '>', 0),
            ('is_enabled', '=', True),
        ])
        for rule in access_rules:
            pct = rule.budget_usage_pct
            if pct >= 80:
                approaching_limits.append({
                    'consumer': rule.consumer_id.name,
                    'provider': rule.provider_id.name,
                    'pct': round(pct, 1),
                    'budget': rule.monthly_budget_usd,
                    'spent': round(rule.current_month_cost, 2),
                })

        return {
            'total_providers': len(providers),
            'active_providers': len(providers.filtered(lambda p: p.status == 'active')),
            'total_consumers': len(consumers),
            'active_consumers': len(consumers.filtered('is_active')),
            'month_cost': round(month_cost, 2),
            'month_requests': month_requests,
            'today_requests': today_requests,
            'top_consumers': top_consumers,
            'provider_stats': provider_stats,
            'recent_usage': recent_list,
            'approaching_limits': approaching_limits,
        }