72 lines
1.2 KiB
Go
72 lines
1.2 KiB
Go
package models
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import (
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"bytes"
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"errors"
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"strings"
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"sync"
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"time"
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)
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const DateFormat = "January 02, 2006 at 03:04:05PM -0700"
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type Entry struct {
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Title string
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Date time.Time
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Fields []Meta
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}
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type metaRes struct {
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out []byte
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err error
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}
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func (e Entry) getFieldMarshalChan() chan metaRes {
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size := len(e.Fields)
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ch := make(chan metaRes, size)
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var wg sync.WaitGroup
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// @todo figure out a way to handle json field
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for i := 0; i < size; i++ {
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wg.Add(1)
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go func(i int) {
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defer wg.Done()
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o, er := e.Fields[i].MarshalText()
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ch <- metaRes{o, er}
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}(i)
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}
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go func() {
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wg.Wait()
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close(ch)
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}()
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return ch
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}
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func (e Entry) MarshalText() ([]byte, error) {
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e.Title = strings.TrimSpace(e.Title)
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if e.Title == "" {
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return []byte{}, errors.New("Empty title")
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}
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if e.Date == (time.Time{}) {
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return []byte{}, errors.New("Empty date")
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}
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ch := e.getFieldMarshalChan()
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buff := &bytes.Buffer{}
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buff.WriteString("@begin ")
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buff.WriteString(e.Date.Format(DateFormat))
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buff.WriteString(" - ")
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buff.WriteString(e.Title)
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for res := range ch {
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if res.err == nil && len(res.out) > 0 {
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buff.WriteString("\n")
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buff.Write(res.out)
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}
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}
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buff.WriteString(" @end")
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return buff.Bytes(), nil
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}
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