89 lines
4.9 KiB
Python
89 lines
4.9 KiB
Python
"""Compare calculable CNY costs on the same destination and billing basis."""
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from decimal import Decimal,ROUND_HALF_UP
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from .quote_fees import charge_details
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def speed_differences(intent, book, rates, fees):
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from .quote_engine import quantity, select_timed_rates,select_cheapest_rates,reference_days
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groups = {}
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for rate in rates:
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key = (rate['origin'], rate['zone'], rate['kind'], rate['unit'], rate['tax'])
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groups.setdefault(key, []).append(rate)
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result = []
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for (origin, zone, kind, unit, tax), candidates in groups.items():
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costs = []
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cheapest=intent.get('selection')=='fastest_cheapest'
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comparison=(select_cheapest_rates(intent,book,candidates,fees) if cheapest
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else select_timed_rates(candidates,slowest=True))
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selections=(select_timed_rates(candidates),comparison)
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for selected in selections:
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values = []
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for rate in selected:
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amount = quantity(intent, rate)
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if amount is not None:
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total=amount * Decimal(rate['price']) + charge_details(intent, rate, fees, book)['cny']
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values.append(total.quantize(Decimal('.01'),rounding=ROUND_HALF_UP))
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costs.append(values)
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fast, slow = costs
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if not fast or not slow:
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continue
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low, high = min(fast) - max(slow), max(fast) - min(slow)
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timing=[]
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for selected in selections:
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bounds=[reference_days(rate) for rate in selected if reference_days(rate)]
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timing.append((min(value[0] for value in bounds),max(value[1] for value in bounds)) if bounds else None)
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result.append({'origin':origin,'zone':zone,'kind':kind,'unit':unit,'tax':tax,
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'low':low,'high':high,'timing':timing,'cheapest':cheapest})
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return result
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def speed_difference_lines(intent, book, rates, fees):
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from .quote_engine import number
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lines=[]
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for row in speed_differences(intent,book,rates,fees):
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label=' · '.join(value for value in (row['origin'],row['zone'],'包税' if row['tax']=='included' else '不包税',
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'海派' if row['kind']=='parcel' else '海卡/海铁') if value)
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difference=number(row['low']) if row['low']==row['high'] else number(row['low'])+'至'+number(row['high'])
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pair='最快与最便宜方案' if row['cheapest'] else '快慢方案'
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lines.append(f'- {label}，{pair}可计算运费差额为{difference}元。')
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return lines
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def render_difference(intent,book,destinations,remote_fees):
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from .quote_engine import match_rates,number,exact_number
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from .quote_language import translate_quote
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groups={}
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for destination,fees in zip(destinations,remote_fees):
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part=destination.get('allocation')
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billing=({**intent,'weight':part['weight'],'packages':part.get('packages'),'dims':None,'cbm':None,'boxes':part.get('boxes')}
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if part else intent)
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if part and intent.get('metal_chargeable_weight') is not None:
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billing.update(metal_chargeable_weight=None,metal_scope='partial')
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for row in speed_differences(billing,book,match_rates(billing,book,destination),fees):
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key=(row['origin'],row['kind'],row['unit'],row['tax'],row['low'],row['high'],tuple(row['timing']),
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row['cheapest'],destination['warehouse'] or destination['postal'],billing.get('weight'))
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groups.setdefault(key,[]).append(row['zone'])
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if not groups:
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return ('Please provide weight, carton dimensions and routes with numeric reference transit times to compare costs.'
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if intent.get('english') else '请提供重量、箱规及有明确数值时效的渠道，继续核算方案差额。')
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lines=['按当前条件，同一交仓地、区域、计费单位和税费口径比较。']
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for (origin,kind,unit,tax,low,high,timing,cheapest,destination,weight),zones in groups.items():
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labels=[origin,destination or '/'.join(dict.fromkeys(zone for zone in zones if zone)),
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'包税' if tax=='included' else '不包税','海派' if kind=='parcel' else '海卡/海铁']
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difference=number(low) if low==high else number(low)+'至'+number(high)
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pair='最快与最便宜方案' if cheapest else '快慢方案'
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line='- '+' · '.join(label for label in labels if label)+f'，{pair}可计算运费差额为{difference}元。'
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if weight:line+=f'按{exact_number(weight)}KG核算。'
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if all(timing):
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days=[number(bounds[0]) if bounds[0]==bounds[1] else number(bounds[0])+'–'+number(bounds[1]) for bounds in timing]
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line+='参考时效分别约'+days[0]+'天、'+days[1]+'天。'
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lines.append(line)
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lines.append('回复“展开报价明细”可查看单价和各方案总价。')
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text='\n'.join(lines)
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return translate_quote(text) if intent.get('english') else text
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