import logging
from datetime import datetime

_logger = logging.getLogger(__name__)


def get_unreconciled_bank_lines(env, params):
    domain = [('is_reconciled', '=', False), ('company_id', '=', env.company.id)]
    if params.get('journal_id'):
        domain.append(('journal_id', '=', int(params['journal_id'])))
    if params.get('date_from'):
        domain.append(('date', '>=', params['date_from']))
    if params.get('date_to'):
        domain.append(('date', '<=', params['date_to']))
    if params.get('min_amount'):
        domain.append(('amount', '>=', float(params['min_amount'])))
    limit = int(params.get('limit', 50))
    lines = env['account.bank.statement.line'].search(domain, limit=limit, order='date desc')
    return {
        'count': len(lines),
        'total_amount': sum(abs(l.amount) for l in lines),
        'lines': [{
            'id': l.id,
            'date': str(l.date),
            'payment_ref': l.payment_ref or '',
            'partner_name': l.partner_name or (l.partner_id.name if l.partner_id else ''),
            'amount': l.amount,
            'journal': l.journal_id.name,
        } for l in lines],
    }


def get_unreconciled_receipts(env, params):
    account_code = params.get('account_code', '1122')
    accounts = env['account.account'].search([
        ('code', '=like', f'{account_code}%'),
        ('company_id', '=', env.company.id),
    ])
    domain = [
        ('account_id', 'in', accounts.ids),
        ('reconciled', '=', False),
        ('parent_state', '=', 'posted'),
        ('company_id', '=', env.company.id),
    ]
    lines = env['account.move.line'].search(domain, order='date desc')
    return {
        'count': len(lines),
        'total_amount': sum(abs(l.amount_residual) for l in lines),
        'lines': [{
            'id': l.id,
            'date': str(l.date),
            'ref': l.ref or l.move_id.name,
            'partner': l.partner_id.name if l.partner_id else '',
            'amount_residual': l.amount_residual,
        } for l in lines],
    }


def match_bank_line_to_payments(env, params):
    st_line_id = int(params['statement_line_id'])
    move_line_ids = [int(x) for x in params['move_line_ids']]
    st_line = env['account.bank.statement.line'].browse(st_line_id)
    if not st_line.exists():
        return {'error': 'Statement line not found'}
    st_line.set_line_bank_statement_line(move_line_ids)
    return {
        'status': 'matched',
        'statement_line_id': st_line_id,
        'matched_move_lines': move_line_ids,
        'is_reconciled': st_line.is_reconciled,
    }


def auto_reconcile_bank_lines(env, params):
    company_id = params.get('company_id', env.company.id)
    lines = env['account.bank.statement.line'].search([
        ('is_reconciled', '=', False),
        ('company_id', '=', int(company_id)),
    ])
    before_count = len(lines)
    lines._try_auto_reconcile_statement_lines(company_id=int(company_id))
    still_unreconciled = env['account.bank.statement.line'].search([
        ('is_reconciled', '=', False),
        ('company_id', '=', int(company_id)),
    ])
    reconciled_count = before_count - len(still_unreconciled)
    return {
        'status': 'completed',
        'lines_before': before_count,
        'lines_reconciled': reconciled_count,
        'lines_remaining': len(still_unreconciled),
    }


def apply_reconcile_model(env, params):
    model_id = int(params['model_id'])
    st_line_id = int(params['statement_line_id'])
    reco_model = env['account.reconcile.model'].browse(model_id)
    st_line = env['account.bank.statement.line'].browse(st_line_id)
    if not reco_model.exists() or not st_line.exists():
        return {'error': 'Model or statement line not found'}
    _liquidity_lines, suspense_lines, _other_lines = st_line._seek_for_lines()
    residual = sum(l.amount_residual for l in suspense_lines) if suspense_lines else st_line.amount
    write_off_vals = reco_model._get_write_off_move_lines_dict(st_line, residual)
    if write_off_vals:
        line_ids_create_command = [(0, 0, vals) for vals in write_off_vals]
        st_line.move_id.write({'line_ids': line_ids_create_command})
    return {
        'status': 'applied',
        'model': reco_model.name,
        'write_off_lines': len(write_off_vals) if write_off_vals else 0,
    }


def unmatch_bank_line(env, params):
    st_line_id = int(params['statement_line_id'])
    st_line = env['account.bank.statement.line'].browse(st_line_id)
    if not st_line.exists():
        return {'error': 'Statement line not found'}
    st_line.action_unreconcile_entry()
    return {'status': 'unmatched', 'statement_line_id': st_line_id}


def get_reconcile_suggestions(env, params):
    st_line_id = int(params['statement_line_id'])
    st_line = env['account.bank.statement.line'].browse(st_line_id)
    if not st_line.exists():
        return {'error': 'Statement line not found'}
    models = env['account.reconcile.model'].search([
        ('company_id', '=', env.company.id),
    ])
    return {
        'models': [{
            'id': m.id,
            'name': m.name,
            'trigger': m.trigger if hasattr(m, 'trigger') else 'manual',
        } for m in models],
    }


def sum_payments_by_date(env, params):
    date_from = params.get('date_from')
    date_to = params.get('date_to')
    if not date_from or not date_to:
        return {'error': 'date_from and date_to are required'}
    journal_ids = params.get('journal_ids', [])
    domain = [
        ('parent_state', '=', 'posted'),
        ('company_id', '=', env.company.id),
        ('date', '>=', date_from),
        ('date', '<=', date_to),
    ]
    if journal_ids:
        domain.append(('journal_id', 'in', [int(j) for j in journal_ids]))
    lines = env['account.move.line'].search(domain)
    total_debit = sum(l.debit for l in lines)
    total_credit = sum(l.credit for l in lines)
    return {
        'date_from': date_from,
        'date_to': date_to,
        'total_debit': total_debit,
        'total_credit': total_credit,
        'net': total_debit - total_credit,
        'line_count': len(lines),
    }


TOOLS = {
    'get_unreconciled_bank_lines': get_unreconciled_bank_lines,
    'get_unreconciled_receipts': get_unreconciled_receipts,
    'match_bank_line_to_payments': match_bank_line_to_payments,
    'auto_reconcile_bank_lines': auto_reconcile_bank_lines,
    'apply_reconcile_model': apply_reconcile_model,
    'unmatch_bank_line': unmatch_bank_line,
    'get_reconcile_suggestions': get_reconcile_suggestions,
    'sum_payments_by_date': sum_payments_by_date,
}