up

2026-10-07 23:09:17 +07:00
parent e0caa0b409
commit 56bc009311
21 changed files with 3310 additions and 221 deletions
@@ -0,0 +1,100 @@
+// Package task_service implements the shared developer board.
+package task_service
+
+import (
+	"context"
+	"strings"
+	"time"
+	"unicode/utf8"
+
+	"evening_detective_server/internal/repos/tasks_repo"
+)
+
+var (
+	ErrInvalidTask     = tasks_repo.ErrInvalidTask
+	ErrNotFound        = tasks_repo.ErrNotFound
+	ErrConflict        = tasks_repo.ErrConflict
+	ErrInvalidAssignee = tasks_repo.ErrInvalidAssignee
+)
+
+type Task = tasks_repo.Task
+type Assignee = tasks_repo.Assignee
+
+type ITasksRepo interface {
+	List(context.Context) ([]*Task, error)
+	ListAssignees(context.Context) ([]Assignee, error)
+	Create(context.Context, Task) (*Task, error)
+	Update(context.Context, Task) (*Task, error)
+	SetStatus(context.Context, int, int, string) (*Task, error)
+	Delete(context.Context, int, int) error
+}
+
+type TaskService struct{ repo ITasksRepo }
+
+func NewTaskService(repo ITasksRepo) *TaskService { return &TaskService{repo: repo} }
+
+func (s *TaskService) List(ctx context.Context) ([]*Task, error) { return s.repo.List(ctx) }
+func (s *TaskService) ListAssignees(ctx context.Context) ([]Assignee, error) {
+	return s.repo.ListAssignees(ctx)
+}
+
+// ParseDueDate preserves calendar dates without a local time zone conversion.
+func ParseDueDate(value string) (*time.Time, error) {
+	if value == "" {
+		return nil, nil
+	}
+	date, err := time.Parse("2006-01-02", value)
+	if err != nil || date.Year() < 1 {
+		return nil, ErrInvalidTask
+	}
+	return &date, nil
+}
+
+func validStatus(status string) bool {
+	return status == "new" || status == "in_progress" || status == "review" || status == "done"
+}
+
+func validate(task *Task) error {
+	task.Title = strings.TrimSpace(task.Title)
+	if task.Title == "" || strings.ContainsRune(task.Title, 0) || strings.ContainsRune(task.Description, 0) ||
+		utf8.RuneCountInString(task.Title) > 255 ||
+		utf8.RuneCountInString(task.Description) > 10000 || !validStatus(task.Status) ||
+		(task.AssigneeID != nil && *task.AssigneeID <= 0) {
+		return ErrInvalidTask
+	}
+	return nil
+}
+
+func (s *TaskService) Create(ctx context.Context, task Task) (*Task, error) {
+	if task.Status == "" {
+		task.Status = "new"
+	}
+	if err := validate(&task); err != nil {
+		return nil, err
+	}
+	return s.repo.Create(ctx, task)
+}
+
+func (s *TaskService) Update(ctx context.Context, task Task) (*Task, error) {
+	if task.ID <= 0 || task.Version <= 0 {
+		return nil, ErrInvalidTask
+	}
+	if err := validate(&task); err != nil {
+		return nil, err
+	}
+	return s.repo.Update(ctx, task)
+}
+
+func (s *TaskService) SetStatus(ctx context.Context, id, version int, status string) (*Task, error) {
+	if id <= 0 || version <= 0 || !validStatus(status) {
+		return nil, ErrInvalidTask
+	}
+	return s.repo.SetStatus(ctx, id, version, status)
+}
+
+func (s *TaskService) Delete(ctx context.Context, id, version int) error {
+	if id <= 0 || version <= 0 {
+		return ErrInvalidTask
+	}
+	return s.repo.Delete(ctx, id, version)
+}
@@ -0,0 +1,133 @@
+package task_service
+
+import (
+	"context"
+	"errors"
+	"strings"
+	"testing"
+)
+
+type fakeTasks struct {
+	task  Task
+	err   error
+	calls int
+}
+
+func (f *fakeTasks) List(context.Context) ([]*Task, error)             { return []*Task{&f.task}, f.err }
+func (f *fakeTasks) ListAssignees(context.Context) ([]Assignee, error) { return nil, f.err }
+func (f *fakeTasks) Create(_ context.Context, task Task) (*Task, error) {
+	f.calls++
+	f.task = task
+	return &f.task, f.err
+}
+func (f *fakeTasks) Update(ctx context.Context, task Task) (*Task, error) { return f.Create(ctx, task) }
+func (f *fakeTasks) SetStatus(_ context.Context, id, version int, status string) (*Task, error) {
+	f.calls++
+	f.task.ID, f.task.Version, f.task.Status = id, version, status
+	return &f.task, f.err
+}
+func (f *fakeTasks) Delete(context.Context, int, int) error { f.calls++; return f.err }
+
+func TestTaskValidationAndErrors(t *testing.T) {
+	zero := 0
+	tests := []struct {
+		name      string
+		task      Task
+		repoErr   error
+		wantErr   error
+		wantCalls int
+	}{
+		{name: "default status and trimmed title", task: Task{Title: " Задача "}, wantCalls: 1},
+		{name: "unicode limit", task: Task{Title: strings.Repeat("Я", 255)}, wantCalls: 1},
+		{name: "NUL in title", task: Task{Title: "Task\x00"}, wantErr: ErrInvalidTask},
+		{name: "NUL in description", task: Task{Title: "Task", Description: "\x00"}, wantErr: ErrInvalidTask},
+		{name: "blank title", task: Task{Title: "  "}, wantErr: ErrInvalidTask},
+		{name: "long title", task: Task{Title: strings.Repeat("Я", 256)}, wantErr: ErrInvalidTask},
+		{name: "long description", task: Task{Title: "Task", Description: strings.Repeat("Я", 10001)}, wantErr: ErrInvalidTask},
+		{name: "unknown status", task: Task{Title: "Task", Status: "cancelled"}, wantErr: ErrInvalidTask},
+		{name: "invalid assignee ID", task: Task{Title: "Task", AssigneeID: &zero}, wantErr: ErrInvalidTask},
+		{name: "ineligible assignee", task: Task{Title: "Task"}, repoErr: ErrInvalidAssignee, wantErr: ErrInvalidAssignee, wantCalls: 1},
+	}
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			repo := &fakeTasks{err: tc.repoErr}
+			_, err := NewTaskService(repo).Create(context.Background(), tc.task)
+			if !errors.Is(err, tc.wantErr) || repo.calls != tc.wantCalls {
+				t.Fatalf("error=%v calls=%d", err, repo.calls)
+			}
+			if err == nil && (repo.task.Title != strings.TrimSpace(tc.task.Title) || repo.task.Status != "new") {
+				t.Fatalf("saved task=%+v", repo.task)
+			}
+		})
+	}
+}
+
+func TestWritesValidateVersionAndPropagateErrors(t *testing.T) {
+	for _, operation := range []string{"update", "status", "delete"} {
+		for _, tc := range []struct {
+			name             string
+			id, version      int
+			repoErr, wantErr error
+		}{
+			{"valid", 1, 1, nil, nil},
+			{"invalid ID", 0, 1, nil, ErrInvalidTask},
+			{"invalid version", 1, 0, nil, ErrInvalidTask},
+			{"conflict", 1, 1, ErrConflict, ErrConflict},
+			{"missing", 1, 1, ErrNotFound, ErrNotFound},
+		} {
+			t.Run(operation+"/"+tc.name, func(t *testing.T) {
+				repo := &fakeTasks{err: tc.repoErr}
+				service := NewTaskService(repo)
+				var err error
+				switch operation {
+				case "update":
+					_, err = service.Update(context.Background(), Task{ID: tc.id, Version: tc.version, Title: "Task", Status: "new"})
+				case "status":
+					_, err = service.SetStatus(context.Background(), tc.id, tc.version, "review")
+				case "delete":
+					err = service.Delete(context.Background(), tc.id, tc.version)
+				}
+				if !errors.Is(err, tc.wantErr) {
+					t.Fatalf("error=%v want=%v", err, tc.wantErr)
+				}
+			})
+		}
+	}
+}
+
+func TestStatusTransitionsAllowAllFourStates(t *testing.T) {
+	for _, status := range []string{"new", "in_progress", "review", "done", "unknown"} {
+		t.Run(status, func(t *testing.T) {
+			repo := &fakeTasks{}
+			_, err := NewTaskService(repo).SetStatus(context.Background(), 1, 1, status)
+			if status == "unknown" {
+				if !errors.Is(err, ErrInvalidTask) || repo.calls != 0 {
+					t.Fatalf("error=%v calls=%d", err, repo.calls)
+				}
+			} else if err != nil || repo.task.Status != status {
+				t.Fatalf("error=%v task=%+v", err, repo.task)
+			}
+		})
+	}
+}
+
+func TestDueDatesRemainCalendarDates(t *testing.T) {
+	for _, tc := range []struct {
+		value string
+		valid bool
+	}{
+		{"", true}, {"2026-10-07", true}, {"2024-02-29", true}, {"2026-02-29", false},
+		{"2026-10-07T00:00:00Z", false}, {"2026-1-2", false}, {"0000-01-01", false},
+	} {
+		t.Run(tc.value, func(t *testing.T) {
+			date, err := ParseDueDate(tc.value)
+			if tc.valid {
+				if err != nil || (tc.value != "" && date.Format("2006-01-02") != tc.value) || (tc.value == "" && date != nil) {
+					t.Fatalf("date=%v err=%v", date, err)
+				}
+			} else if !errors.Is(err, ErrInvalidTask) {
+				t.Fatalf("error=%v", err)
+			}
+		})
+	}
+}