/
course.go
74 lines (57 loc) · 2.06 KB
/
course.go
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// Copyright (c) 2017-2019 Carnegie Mellon University. All rights reserved.
// Use of this source code is governed by BSD 3-clause license.
package resolver
import (//"fmt"
"context"
// "errors"
"time"
//graphql "github.com/graph-gophers/graphql-go"
// dbhandler "go.edusense.io/storage/dbhandler"
models "go.edusense.io/storage/models"
)
// SessionResolver queries database and resolves query-agnostic Session model.
type CourseResolver struct {
CourseMetadata models.Course
}
// Sessions returns list of session resolvers from underlying database.
func (q QueryResolver) Courses (ctx context.Context) ([]*CourseResolver, error) {
//To search database from creation of database until now
filter := &models.SessionFilter{
TimestampStart: time.Unix(0, 0),
TimestampEnd: time.Now(),
}
sessions, err := q.Driver.GetCourse(filter)
if err != nil {
return []*CourseResolver{}, err
}
resolvers := make([]*CourseResolver, len(sessions))
for i, f := range sessions {
resolvers[i] = &CourseResolver{CourseMetadata : f}
}
return resolvers, nil
}
// ID extracts Session ID from given Session resolver.
func (s *CourseResolver) ClassID(ctx context.Context) (string, error) {
return s.CourseMetadata.ClassID, nil
}
func (s *CourseResolver) Section(ctx context.Context) (string, error) {
return s.CourseMetadata.Section, nil
}
func (s *CourseResolver) Semester(ctx context.Context) (string, error) {
return s.CourseMetadata.Semester, nil
}
func (s *CourseResolver) Year(ctx context.Context) (int32, error) {
return int32(s.CourseMetadata.Year), nil
}
func (s *CourseResolver) LectureType(ctx context.Context) (string, error) {
return s.CourseMetadata.LectureType, nil
}
func (s *CourseResolver) Instructors(ctx context.Context) ([][]string, error) {
return s.CourseMetadata.Instructors, nil
}
func (s *CourseResolver) TeachingAssistants(ctx context.Context) ([][]string, error) {
return s.CourseMetadata.TeachingAssistants, nil
}
func (s *CourseResolver) InitialEnrollment(ctx context.Context) (int32, error) {
return int32(s.CourseMetadata.InitialEnrollment), nil
}