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53 lines
1.2 KiB
Go
53 lines
1.2 KiB
Go
package application
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import (
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"errors"
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"fmt"
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"strconv"
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"git.buddy.wtf/challenges/buckets-of-fun/lib/bucket"
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)
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// App holds context for the application
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type App struct {
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Target uint64
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Buckets bucket.Buckets
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}
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// New returns an instance of the app
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func New(args ...string) (*App, error) {
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if len(args) < 2 {
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msg := fmt.Sprintf("usage error: requires at least 2 arguments, received %d", len(args))
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return nil, errors.New(msg)
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}
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target, err := strconv.ParseUint(args[0], 10, 64)
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if err != nil {
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return nil, errors.New("target must be a positive integer: " + err.Error())
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}
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app := App{
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Target: target,
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Buckets: bucket.Buckets{},
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}
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for _, arg := range args[1:] {
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capacity, err := strconv.ParseUint(arg, 10, 64)
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if err != nil {
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return nil, errors.New("bucket capacity must be a positive integer: " + err.Error())
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}
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app.Buckets = append(app.Buckets, bucket.Bucket{Capacity: capacity})
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}
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return &app, nil
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}
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// Run runs the application
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func (a *App) Run() error {
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fmt.Printf("target: %d\n", a.Target)
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fmt.Printf("buckets: %s\n", a.Buckets.String())
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for _, solution := range a.Buckets.FindTarget((a.Target)) {
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fmt.Println(solution)
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}
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return nil
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}
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