Ajout d'une newsletter basique

La newsletter effectue une collecte des évènements sur une période de
temps donné et envoi un récapitulatif à l'ensemble des utilisateurs de
Daddy.

Actuellement, sont collectés et présentés:

- Les créations de groupes de travail
- Les créations de dossiers d'aide à la décision
- Les dossiers dont le statut à été modifié et prêt à voté

internal/task/newsletter.go

@@ -0,0 +1,212 @@
+package task
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"text/template"
+	"time"
+
+	"forge.cadoles.com/Cadoles/daddy/internal/mail"
+	"forge.cadoles.com/Cadoles/daddy/internal/model"
+	"github.com/pkg/errors"
+
+	"forge.cadoles.com/Cadoles/daddy/internal/orm"
+
+	"gitlab.com/wpetit/goweb/middleware/container"
+
+	"gitlab.com/wpetit/goweb/logger"
+)
+
+type Newsletter struct {
+	ctx             context.Context
+	timeRange       time.Duration
+	baseURL         string
+	contentTemplate string
+	subjectTemplate string
+	from            string
+}
+
+func (t *Newsletter) Name() string {
+	return "newsletter"
+}
+
+func (t *Newsletter) Run() {
+	ctx := t.ctx
+
+	logger.Info(ctx, "preparing newsletter", logger.F("timeRange", t.timeRange))
+
+	contentTmpl, err := template.New("").Parse(t.contentTemplate)
+	if err != nil {
+		logger.Error(ctx, "could not parse newsletter content template", logger.E(errors.WithStack(err)))
+
+		return
+	}
+
+	subjectTmpl, err := template.New("").Parse(t.subjectTemplate)
+	if err != nil {
+		logger.Error(ctx, "could not parse newsletter subject template", logger.E(errors.WithStack(err)))
+
+		return
+	}
+
+	ctn := container.Must(ctx)
+	orm := orm.Must(ctn)
+	db := orm.DB()
+	mailSrv := mail.Must(ctn)
+
+	eventRepo := model.NewEventRepository(db)
+
+	to := time.Now()
+	from := to.Add(-t.timeRange)
+
+	events, err := eventRepo.Search(ctx, &model.EventFilter{
+		From: &from,
+		To:   &to,
+	})
+	if err != nil {
+		logger.Error(ctx, "could not search events", logger.E(errors.WithStack(err)))
+
+		return
+	}
+
+	newWorkgroups := make([]*model.Workgroup, 0)
+	newDecisionSupportFiles := make([]*model.DecisionSupportFile, 0)
+	readyToVote := make([]*model.DecisionSupportFile, 0)
+
+	workgroupRepo := model.NewWorkgroupRepository(db)
+	dsfRepo := model.NewDSFRepository(db)
+
+	for _, evt := range events {
+		switch {
+		case evt.Type == model.EventTypeCreated && evt.ObjectType == model.ObjectTypeWorkgroup:
+			workgroup, err := workgroupRepo.Find(ctx, fmt.Sprintf("%d", evt.ObjectID))
+			if err != nil {
+				logger.Error(
+					ctx, "could not find workgroup",
+					logger.E(errors.WithStack(err)),
+					logger.F("id", evt.ObjectID),
+				)
+
+				return
+			}
+
+			newWorkgroups = append(newWorkgroups, workgroup)
+
+		case evt.Type == model.EventTypeCreated && evt.ObjectType == model.ObjectTypeDecisionSupportFile:
+			dsf, err := dsfRepo.Find(ctx, fmt.Sprintf("%d", evt.ObjectID))
+			if err != nil {
+				logger.Error(
+					ctx, "could not find decision support file",
+					logger.E(errors.WithStack(err)),
+					logger.F("id", evt.ObjectID),
+				)
+
+				return
+			}
+
+			newDecisionSupportFiles = append(newDecisionSupportFiles, dsf)
+
+		case evt.Type == model.EventTypeStatusChanged && evt.ObjectType == model.ObjectTypeDecisionSupportFile:
+			dsf, err := dsfRepo.Find(ctx, fmt.Sprintf("%d", evt.ObjectID))
+			if err != nil {
+				logger.Error(
+					ctx, "could not find decision support file",
+					logger.E(errors.WithStack(err)),
+					logger.F("id", evt.ObjectID),
+				)
+
+				return
+			}
+
+			if dsf.Status == model.StatusReady {
+				readyToVote = append(readyToVote, dsf)
+			}
+		}
+	}
+
+	hasEvents := len(newDecisionSupportFiles) > 0 || len(newWorkgroups) > 0
+
+	userRepo := model.NewUserRepository(db)
+
+	users, err := userRepo.All(ctx)
+	if err != nil {
+		logger.Error(ctx, "could not find users", logger.E(errors.WithStack(err)))
+
+		return
+	}
+
+	var (
+		contentBuff bytes.Buffer
+		subjectBuff bytes.Buffer
+	)
+
+	for _, u := range users {
+		tmplData := struct {
+			User                    *model.User
+			NewWorkgroups           []*model.Workgroup
+			NewDecisionSupportFiles []*model.DecisionSupportFile
+			ReadyToVote             []*model.DecisionSupportFile
+			BaseURL                 string
+			From                    time.Time
+			To                      time.Time
+			HasEvents               bool
+		}{
+			User:                    u,
+			BaseURL:                 t.baseURL,
+			NewWorkgroups:           newWorkgroups,
+			NewDecisionSupportFiles: newDecisionSupportFiles,
+			ReadyToVote:             readyToVote,
+			From:                    from.Local(),
+			To:                      to.Local(),
+			HasEvents:               hasEvents,
+		}
+
+		err = contentTmpl.Execute(&contentBuff, tmplData)
+		if err != nil {
+			logger.Error(ctx, "could not execute newsletter content template", logger.E(errors.WithStack(err)))
+
+			return
+		}
+
+		err = subjectTmpl.Execute(&subjectBuff, tmplData)
+		if err != nil {
+			logger.Error(ctx, "could not execute newsletter subject template", logger.E(errors.WithStack(err)))
+
+			return
+		}
+
+		newsletterContent := contentBuff.String()
+		newsletterSubject := subjectBuff.String()
+
+		err := mailSrv.Send(
+			mail.WithRecipients(u.Email),
+			mail.WithSubject(newsletterSubject),
+			mail.WithSender(t.from, ""),
+			mail.WithBody(mail.ContentTypeText, newsletterContent, nil),
+		)
+		if err != nil {
+			logger.Error(
+				ctx, "could not send newsletter",
+				logger.E(errors.WithStack(err)),
+				logger.F("email", u.Email),
+			)
+
+			return
+		}
+
+		contentBuff.Reset()
+		subjectBuff.Reset()
+	}
+}
+
+func NewNewsletter(ctx context.Context, timeRange time.Duration, baseURL, contentTemplate, subjectTemplate, from string) *Newsletter {
+	return &Newsletter{
+		ctx:             ctx,
+		timeRange:       timeRange,
+		baseURL:         baseURL,
+		contentTemplate: contentTemplate,
+		subjectTemplate: subjectTemplate,
+		from:            from,
+	}
+}

internal/task/task.go

@@ -0,0 +1,6 @@
+package task
+
+type Task interface {
+	Name() string
+	Run()
+}