import { api } from "@/lib/api-client";
import type {
  InstExamSession, InstExam, ExamType, GradeConfig,
  ResultTemplate, Marksheet, CourseAssignment, AssignmentSubmission,
  AssignmentType, SubjectRegistration,
  InstExamSessionCreateRequest, InstExamCreateRequest,
  ExamTypeCreateRequest, GradeConfigCreateRequest,
  ResultTemplateCreateRequest, CourseAssignmentCreateRequest,
  AssignmentTypeCreateRequest, SubjectRegistrationCreateRequest,
} from "@/types/institutional-exam";
import type { PaginatedResponse, PaginationParams, ApiSuccessResponse } from "@/types";

export const institutionalExamService = {
  async listSessions(params?: PaginationParams): Promise<PaginatedResponse<InstExamSession>> {
    return api.get<PaginatedResponse<InstExamSession>>("/inst-exam-sessions", params as Record<string, string | number | boolean | undefined>);
  },

  async getSession(id: number): Promise<InstExamSession> {
    return api.get<InstExamSession>(`/inst-exam-sessions/${id}`);
  },

  async createSession(data: InstExamSessionCreateRequest): Promise<InstExamSession> {
    return api.post<InstExamSession>("/inst-exam-sessions", data);
  },

  async updateSession(id: number, data: Partial<InstExamSessionCreateRequest>): Promise<InstExamSession> {
    return api.patch<InstExamSession>(`/inst-exam-sessions/${id}`, data);
  },

  async deleteSession(id: number): Promise<ApiSuccessResponse> {
    return api.delete<ApiSuccessResponse>(`/inst-exam-sessions/${id}`);
  },

  async scheduleSession(id: number): Promise<InstExamSession> {
    return api.post<InstExamSession>(`/inst-exam-sessions/${id}/schedule`);
  },

  async markSessionDone(id: number): Promise<InstExamSession> {
    return api.post<InstExamSession>(`/inst-exam-sessions/${id}/done`);
  },

  async createExam(data: InstExamCreateRequest): Promise<InstExam> {
    return api.post<InstExam>("/inst-exams", data);
  },

  async updateExam(id: number, data: Partial<InstExamCreateRequest>): Promise<InstExam> {
    return api.patch<InstExam>(`/inst-exams/${id}`, data);
  },

  async addAttendees(examId: number, data: { student_ids: number[] }): Promise<ApiSuccessResponse> {
    return api.post<ApiSuccessResponse>(`/inst-exams/${examId}/attendees`, data);
  },

  async enterMarks(examId: number, data: { marks: { student_id: number; score: number }[] }): Promise<ApiSuccessResponse> {
    return api.patch<ApiSuccessResponse>(`/inst-exams/${examId}/marks`, data);
  },

  async listExamTypes(params?: PaginationParams): Promise<PaginatedResponse<ExamType>> {
    return api.get<PaginatedResponse<ExamType>>("/exam-types", params as Record<string, string | number | boolean | undefined>);
  },

  async createExamType(data: ExamTypeCreateRequest): Promise<ExamType> {
    return api.post<ExamType>("/exam-types", data);
  },

  async listGradeConfigs(params?: PaginationParams): Promise<PaginatedResponse<GradeConfig>> {
    return api.get<PaginatedResponse<GradeConfig>>("/grade-config", params as Record<string, string | number | boolean | undefined>);
  },

  async createGradeConfig(data: GradeConfigCreateRequest): Promise<GradeConfig> {
    return api.post<GradeConfig>("/grade-config", data);
  },

  async listResultTemplates(params?: PaginationParams): Promise<PaginatedResponse<ResultTemplate>> {
    return api.get<PaginatedResponse<ResultTemplate>>("/result-templates", params as Record<string, string | number | boolean | undefined>);
  },

  async createResultTemplate(data: ResultTemplateCreateRequest): Promise<ResultTemplate> {
    return api.post<ResultTemplate>("/result-templates", data);
  },

  async generateMarksheets(templateId: number): Promise<ApiSuccessResponse> {
    return api.post<ApiSuccessResponse>(`/result-templates/${templateId}/generate`);
  },

  async listMarksheets(params?: PaginationParams): Promise<PaginatedResponse<Marksheet>> {
    return api.get<PaginatedResponse<Marksheet>>("/marksheets", params as Record<string, string | number | boolean | undefined>);
  },

  async getMarksheet(id: number): Promise<Marksheet> {
    return api.get<Marksheet>(`/marksheets/${id}`);
  },

  async validateMarksheet(id: number): Promise<Marksheet> {
    return api.post<Marksheet>(`/marksheets/${id}/validate`);
  },

  async listCourseAssignments(params?: PaginationParams & { course_id?: number; batch_id?: number; state?: string }): Promise<PaginatedResponse<CourseAssignment>> {
    return api.get<PaginatedResponse<CourseAssignment>>("/course-assignments", params as Record<string, string | number | boolean | undefined>);
  },

  async createCourseAssignment(data: CourseAssignmentCreateRequest): Promise<CourseAssignment> {
    return api.post<CourseAssignment>("/course-assignments", data);
  },

  async getCourseAssignment(id: number): Promise<CourseAssignment> {
    return api.get<CourseAssignment>(`/course-assignments/${id}`);
  },

  async updateCourseAssignment(id: number, data: Partial<CourseAssignmentCreateRequest>): Promise<CourseAssignment> {
    return api.patch<CourseAssignment>(`/course-assignments/${id}`, data);
  },

  async publishCourseAssignment(id: number): Promise<CourseAssignment> {
    return api.post<CourseAssignment>(`/course-assignments/${id}/publish`);
  },

  async finishCourseAssignment(id: number): Promise<CourseAssignment> {
    return api.post<CourseAssignment>(`/course-assignments/${id}/finish`);
  },

  async listSubmissions(assignmentId: number, params?: PaginationParams): Promise<PaginatedResponse<AssignmentSubmission>> {
    return api.get<PaginatedResponse<AssignmentSubmission>>(`/course-assignments/${assignmentId}/submissions`, params as Record<string, string | number | boolean | undefined>);
  },

  async submitAssignment(assignmentId: number, file: File): Promise<AssignmentSubmission> {
    const formData = new FormData();
    formData.append("file", file);
    return api.upload<AssignmentSubmission>(`/course-assignments/${assignmentId}/submit`, formData);
  },

  async gradeSubmission(submissionId: number, data: Partial<AssignmentSubmission>): Promise<AssignmentSubmission> {
    return api.patch<AssignmentSubmission>(`/submissions/${submissionId}`, data);
  },

  async listAssignmentTypes(params?: PaginationParams): Promise<PaginatedResponse<AssignmentType>> {
    return api.get<PaginatedResponse<AssignmentType>>("/assignment-types", params as Record<string, string | number | boolean | undefined>);
  },

  async createAssignmentType(data: AssignmentTypeCreateRequest): Promise<AssignmentType> {
    return api.post<AssignmentType>("/assignment-types", data);
  },

  async listSubjectRegistrations(params?: PaginationParams & { student_id?: number; course_id?: number; state?: string }): Promise<PaginatedResponse<SubjectRegistration>> {
    return api.get<PaginatedResponse<SubjectRegistration>>("/subject-registrations", params as Record<string, string | number | boolean | undefined>);
  },

  async createSubjectRegistration(data: SubjectRegistrationCreateRequest): Promise<SubjectRegistration> {
    return api.post<SubjectRegistration>("/subject-registrations", data);
  },

  async updateSubjectRegistration(id: number, data: Partial<SubjectRegistrationCreateRequest>): Promise<SubjectRegistration> {
    return api.patch<SubjectRegistration>(`/subject-registrations/${id}`, data);
  },

  async confirmSubjectRegistration(id: number): Promise<SubjectRegistration> {
    return api.post<SubjectRegistration>(`/subject-registrations/${id}/confirm`);
  },

  async rejectSubjectRegistration(id: number): Promise<SubjectRegistration> {
    return api.post<SubjectRegistration>(`/subject-registrations/${id}/reject`);
  },

  async getAvailableSubjects(params?: { student_id?: number; course_id?: number }): Promise<SubjectRegistration[]> {
    return api.get<SubjectRegistration[]>("/subject-registrations/available", params as Record<string, string | number | boolean | undefined>);
  },
};