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package task
import (
"fmt"
"os"
"time"
"github.com/google/uuid"
"gopkg.in/yaml.v3"
)
// ParseFile reads a YAML file and returns tasks. Supports both single-task
// and batch (tasks: [...]) formats.
func ParseFile(path string) ([]Task, error) {
data, err := os.ReadFile(path)
if err != nil {
return nil, fmt.Errorf("reading task file: %w", err)
}
return Parse(data)
}
// Parse parses YAML bytes into tasks.
func Parse(data []byte) ([]Task, error) {
// Try batch format first.
var batch BatchFile
if err := yaml.Unmarshal(data, &batch); err == nil && len(batch.Tasks) > 0 {
return initTasks(batch.Tasks), nil
}
// Try single task.
var t Task
if err := yaml.Unmarshal(data, &t); err != nil {
return nil, fmt.Errorf("parsing task YAML: %w", err)
}
if t.Name == "" {
return nil, fmt.Errorf("task must have a name")
}
return initTasks([]Task{t}), nil
}
func initTasks(tasks []Task) []Task {
now := time.Now()
for i := range tasks {
if tasks[i].ID == "" {
tasks[i].ID = uuid.New().String()
}
if tasks[i].Priority == "" {
tasks[i].Priority = PriorityNormal
}
if tasks[i].Retry.MaxAttempts == 0 {
tasks[i].Retry.MaxAttempts = 1
}
if tasks[i].Retry.Backoff == "" {
tasks[i].Retry.Backoff = "exponential"
}
tasks[i].State = StatePending
tasks[i].CreatedAt = now
tasks[i].UpdatedAt = now
}
return tasks
}
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