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fetcher.go
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fetcher.go
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package http_client
import (
"context"
"github.com/bulutcan99/weekly-task-scheduler/internal/application/interfaces"
"github.com/bulutcan99/weekly-task-scheduler/internal/domain/model/entity"
"github.com/bulutcan99/weekly-task-scheduler/internal/domain/model/valueobject"
"github.com/bulutcan99/weekly-task-scheduler/pkg/helper"
"github.com/goccy/go-json"
"go.mongodb.org/mongo-driver/bson/primitive"
"log/slog"
"sync"
)
type Fetcher struct {
providerService interfaces.IProviderService
taskService interfaces.ITaskService
}
func NewFetcher(providerService interfaces.IProviderService, taskService interfaces.ITaskService) *Fetcher {
return &Fetcher{
providerService: providerService,
taskService: taskService,
}
}
func (s *Fetcher) FetchTasksFromMongo(ctx context.Context) error {
providers, err := s.providerService.GetProviders(ctx)
if err != nil {
return err
}
var wg sync.WaitGroup
errCh := make(chan error, len(providers))
for _, provider := range providers {
wg.Add(1)
go func(provider *entity.Provider) {
defer wg.Done()
_, body, err := SendGetRequest(provider.Url)
if err != nil {
errCh <- err
return
}
var tasks []map[string]any
if err := json.Unmarshal(body, &tasks); err != nil {
slog.Error("Error while parsing body: ", err)
errCh <- err
return
}
for _, task := range tasks {
taskName := task[provider.TaskNameKey].(string)
difficulty := helper.ConvertToInt(task[provider.TaskValueKey].(float64))
duration := helper.ConvertToInt(task[provider.TaskDurationKey].(float64))
taskData := &valueobject.Task{
ProviderID: provider.ID,
Name: taskName,
Difficulty: difficulty,
Duration: duration,
Intensity: difficulty * duration,
}
if err := s.taskService.AddTask(ctx, taskData); err != nil {
slog.Error("Error while adding task: ", err)
errCh <- err
return
}
}
}(&provider)
}
go func() {
wg.Wait()
close(errCh)
}()
for err := range errCh {
if err != nil {
return err
}
}
return nil
}
func (s *Fetcher) FetchTasks(ctx context.Context, provider *entity.Provider) error {
var wg sync.WaitGroup
errCh := make(chan error, 1)
wg.Add(1)
go func(provider *entity.Provider) {
defer wg.Done()
_, body, err := SendGetRequest(provider.Url)
if err != nil {
errCh <- err
return
}
var tasks []map[string]any
if err := json.Unmarshal(body, &tasks); err != nil {
slog.Error("Error while parsing body: ", err)
errCh <- err
return
}
for _, task := range tasks {
taskName := task[provider.TaskNameKey].(string)
difficulty := helper.ConvertToInt(task[provider.TaskValueKey].(float64))
duration := helper.ConvertToInt(task[provider.TaskDurationKey].(float64))
taskData := &valueobject.Task{
ID: primitive.NewObjectID(),
ProviderID: provider.ID,
Name: taskName,
Difficulty: difficulty,
Duration: duration,
Intensity: difficulty * duration,
}
if err := s.taskService.AddTask(ctx, taskData); err != nil {
slog.Error("Error while adding task: ", err)
errCh <- err
return
}
}
}(provider)
go func() {
wg.Wait()
close(errCh)
}()
for err := range errCh {
if err != nil {
return err
}
}
return nil
}