42 lines
1.2 KiB
Go
42 lines
1.2 KiB
Go
package rate
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import (
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"fmt"
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"regexp"
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"strconv"
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"strings"
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"ops-assistant/internal/core/command"
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)
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type Module struct{}
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func New() *Module { return &Module{} }
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var re = regexp.MustCompile(`(?i)^/rate\s+([0-9]+(?:\.[0-9]+)?)\s*([a-z]{3})\s*(?:(?:to)\s*|->\s*|/\s*)([a-z]{3})\s*$`)
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func (m *Module) Handle(_ int64, cmd *command.ParsedCommand) (string, error) {
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text := strings.TrimSpace(cmd.Raw)
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if strings.EqualFold(text, "/rate") || strings.HasPrefix(strings.ToLower(text), "/rate help") {
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return help(), nil
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}
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hit := re.FindStringSubmatch(text)
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if hit == nil {
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return help(), nil
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}
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amount, err := strconv.ParseFloat(hit[1], 64)
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if err != nil || amount <= 0 {
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return "❌ 金额无效", nil
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}
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base := strings.ToUpper(hit[2])
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quote := strings.ToUpper(hit[3])
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if base == quote {
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return fmt.Sprintf("💱 %s → %s\n\n%s %s = %s %s", base, quote, hit[1], base, hit[1], quote), nil
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}
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return query(amount, base, quote)
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}
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func help() string {
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return "💱 汇率转换\n\n用法：/rate 138 sgd to cny\n\n也支持：\n/rate 138sgd to cny\n/rate 100 usd to cny\n/rate 50 eur -> sgd\n/rate 1000 php/cny\n\n数据源：Google Finance、Visa、Mastercard。Visa/万事达为官方结算汇率；Google 为市场参考价。"
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}
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