Module exercises 

Controllers for requests starting with /api/v0/main-frontend/exercises.

Structs

CsvColumnDefinition 🔒

ExerciseAnswersCsvExportRequestItem 🔒

ExerciseCsvExportQuery

ExerciseCsvExportTaskOption

ExerciseDefinitionsCsvExportRequestItem 🔒

ExerciseSubmissions

ResetExercisesPayload

Constants

EXERCISE_SERVICE_CSV_EXPORT_BATCH_SIZE 🔒

Functions

_add_routes

Add a route for each controller in this module.

build_column_index_map 🔒

Builds key -> column index map for final columns.

build_final_columns 🔒

Merges base and service columns ensuring unique keys and mapping; errors on duplicate original service keys or final name collisions.

build_service_endpoint_url 🔒

Builds final CSV endpoint URL using internally preferred base URL.

csv_endpoint_is_supported 🔒

Returns true if the endpoint path is non-empty.

csv_writer_into_bytes 🔒

Finalizes writer into bytes and maps CSV errors to ControllerError.

export_exercise_task_answers_csv 🔒

GET /api/v0/main-frontend/exercises/:exercise_id/export-answers-csv - Exports all answers for one exercise task as CSV using the task’s exercise service.

export_exercise_task_definitions_csv 🔒

GET /api/v0/main-frontend/exercises/:exercise_id/export-definitions-csv - Exports one exercise task definition as CSV using the task’s exercise service.

fetch_exercise_service_and_info 🔒

Fetches exercise service from DB and service info via HTTP; prefers internal_url, falls back to public_url.

get_csv_export_endpoint_path 🔒

Parses and validates endpoint path or returns BadRequest if missing/empty.

get_exercise 🔒

GET /api/v0/main-frontend/exercises/:exercise_id - Returns a single exercise.

get_exercise_answers_requiring_attention 🔒

GET /api/v0/main-frontend/exercises/:exercise_id/answers-requiring-attention - Returns an exercise’s answers requiring attention.

get_exercise_csv_export_task_options 🔒

GET /api/v0/main-frontend/exercises/:exercise_id/csv-export-task-options - Returns available exercise tasks and CSV export support flags for each task’s exercise service.

get_exercise_submissions 🔒

GET /api/v0/main-frontend/exercises/:exercise_id/submissions - Returns an exercise’s submissions.

get_exercise_submissions_for_user 🔒

GET /api/v0/main-frontend/exercises/:exercise_id/submissions/user/:user_id - Returns an exercise’s submissions for a user.

get_exercises_by_course_id

GET /api/v0/main-frontend/exercises/:course_id/exercises-by-course-id - Returns all exercises for a course with course_id

get_selected_task 🔒

Selects task by id or returns BadRequest if not found in list.

reset_exercises_for_selected_users

POST /api/v0/main-frontend/exercises/:course_id/reset-exercises-for-selected-users - Resets all selected exercises for selected users and then logs the resets to exercise_reset_logs table

scalar_json_to_csv_value 🔒

Converts scalar JSON to CSV string; errors on array/object.

write_csv_rows 🔒

Writes CSV rows merging base_row and service rows; validates keys against mapping.