| // Copyright 2018 Google LLC | |
| // | |
| // Licensed under the Apache License, Version 2.0 (the "License"); | |
| // you may not use this file except in compliance with the License. | |
| // You may obtain a copy of the License at | |
| // | |
| // http://www.apache.org/licenses/LICENSE-2.0 | |
| // | |
| // Unless required by applicable law or agreed to in writing, software | |
| // distributed under the License is distributed on an "AS IS" BASIS, | |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| // See the License for the specific language governing permissions and | |
| // limitations under the License. | |
| package main | |
| import ( | |
| "fmt" | |
| "math" | |
| ) | |
| // Quote represents a currency value. | |
| type Quote struct { | |
| Dollars uint32 | |
| Cents uint32 | |
| } | |
| // String representation of the Quote. | |
| func (q Quote) String() string { | |
| return fmt.Sprintf("$%d.%d", q.Dollars, q.Cents) | |
| } | |
| // CreateQuoteFromCount takes a number of items and returns a shipping quote. | |
| func CreateQuoteFromCount(count int) Quote { | |
| if count == 0 { | |
| return CreateQuoteFromFloat(0) | |
| } | |
| return CreateQuoteFromFloat(8.99) | |
| } | |
| // CreateQuoteFromFloat takes a price represented as a float and creates a Price struct. | |
| func CreateQuoteFromFloat(value float64) Quote { | |
| units, fraction := math.Modf(value) | |
| return Quote{ | |
| uint32(units), | |
| uint32(math.Trunc(fraction * 100)), | |
| } | |
| } |