<?php

class Course extends Eloquent
{

  protected $fillable = array('name', 'code', 'number', 'section', 'program_id', 'user_id', 'semester_id');

  public function program()
  {
    return $this->belongsTo('Program');
  }

  public function students()
  {
    return $this->belongsToMany('Student')->orderBy('name', 'asc')->withTimestamps();
  }

  public function user()
  {
    return $this->belongsTo('User')->orderBy('surnames', 'asc')->orderBy('first_name', 'asc');
  }


  // TODO: Remove
  public function activities()
  {
    return $this->hasMany('Activity')->orderBy('date', 'asc');
  }

  public function activity()
  {
    return $this->belongsTo('Activity');
  }

  public function assessedActivities()
  {
    // return $this->hasMany('Activity')->whereNotNull('activities.outcomes_attempted')->orderBy('date', 'asc');
    $activitiesAssessed = DB::table('activities')
      ->join('activity_criterion as ac', 'ac.activity_id', '=', 'activities.id')
      ->join('assessments', 'assessments.activity_criterion_id', '=', 'ac.id')
      ->where('activities.course_id', $this->id)
      ->select('activities.id')
      ->distinct()
      ->lists('activities.id');
    Log::info($activitiesAssessed);

    return $this->hasMany('Activity')->whereIn('activities.id', $activitiesAssessed)->orderBy('date', 'asc');

    //    return $this->hasMany('Activity')->where('activities.draft', 0)->orderBy('date', 'asc');
  }

  public function publishedActivities()
  {
    $activitiesAssessed = DB::table('activities')
      ->join('activity_criterion as ac', 'ac.activity_id', '=', 'activities.id')
      ->join('assessments', 'assessments.activity_criterion_id', '=', 'ac.id')
      ->where('activities.course_id', $this->id)
      ->where('activities.draft', 0)
      ->where('activities.diagnostic', 0)
      ->select('activities.id')
      ->distinct()
      ->lists('activities.id');
    //$this->hasMany('Activity')->whereNotNull('activities.outcomes_attempted')->where('activities.draft', 0)->orderBy('date', 'asc');
    return  $this->hasMany('Activity')->whereIn('activities.id', $activitiesAssessed)->orderBy('date', 'asc');
  }
  public function diagnosticActivities()
  {
    $activitiesAssessed = DB::table('activities')
      ->join('activity_criterion as ac', 'ac.activity_id', '=', 'activities.id')
      ->join('assessments', 'assessments.activity_criterion_id', '=', 'ac.id')
      ->where('activities.course_id', $this->id)
      ->where('activities.draft', 0)
      ->where('activities.diagnostic', 1)
      ->select('activities.id')
      ->distinct()
      ->lists('activities.id');
    //$this->hasMany('Activity')
    return  $this->hasMany('Activity')->whereIn('activities.id', $activitiesAssessed)->orderBy('date', 'asc');
  }

  public function outcomes_attempted()
  {
    return DB::table('courses')
      ->join('activities', 'activities.course_id', '=', 'courses.id')
      ->join('activity_criterion', 'activity_criterion.activity_id', '=', 'activities.id')
      ->join('criteria', 'activity_criterion.criterion_id', '=', 'criteria.id')
      ->join('criterion_objective_outcome', 'criterion_objective_outcome.criterion_id', '=', 'criteria.id')
      ->where('courses.id', '=', $this->id)
      ->select('criterion_objective_outcome.outcome_id')
      ->distinct()
      ->orderBy('criterion_objective_outcome.outcome_id')
      ->get();

    //   	SELECT distinct cr.outcome_id FROM  courses c, activities a, activity_criterion ac, criteria cr WHERE c.id=a.course_id and a.id=ac.activity_id and ac.criterion_id=cr.id and c.id=1
    // 	return $this->id;
  }


  public function outcomes_att()
  {
    $criteria_attempted = DB::table('courses')
      ->join('activities', 'activities.course_id', '=', 'courses.id')
      ->join('activity_criterion', 'activities.id', '=', 'activity_criterion.activity_id')
      ->select('criterion_id', 'activity_criterion.id as activity_criterion_id')
      ->where('courses.id', $this->id)
      ->where('draft', 0)
      ->where('activities.diagnostic', 0)
      ->get();

    // Old data was formed like { "outcome1": cuantity_of_criteria_associated, "outcome2":cuantity_of_criteria}
    $outcomes_attempted = [];


    foreach ($criteria_attempted as $criterion) {
      $outcomes = DB::table('criterion_objective_outcome')
        ->where('criterion_id', $criterion->criterion_id)
        ->select('outcome_id')
        ->distinct()
        ->lists('outcome_id');

      foreach ($outcomes as $outcome_id) {
        if (array_key_exists($outcome_id, $outcomes_attempted)) $outcomes_attempted[$outcome_id] += 1;
        else $outcomes_attempted[$outcome_id] = 1;
      }
    }
    Log::info("outcomes_attempted");
    Log::info($outcomes_attempted);

    return $outcomes_attempted;
  }
  public static function getCriteriaPlanReport($course_code = null)
  {
    if ($course_code) {
      $criteria_id = DB::table('annual_plan_objective')
        ->where('typ_semester_course_id', $course_code->typ_semester_course_id)
        ->lists('criteria_id');
      Log::info($course_code->typ_semester_course_id);
      Log::info("dame ese id");
      $program = Program::where('id', $course_code->program_id)->first();
      // Log::info($program->code);
      if ($program->code == "") {
        $program_ids = DB::table('programs')
          ->where('school_id', $program->school->id)
          ->lists('programs.id');
        //Log::info("estamos");
      } else $program_ids = array($program->id);

      /*tabla es asi por curso codigo
      *
      *criterioDelPlan    EstudiantesDelProgramaQuePasaron   EstudiantesqueIntentaron
      *    
      *    criterio1                 3                             5
      *    criterio2                 2                             2
      *
      *
      */
      $table_per_criterion = DB::table('program_student_semester')
        ->join('course_student', 'program_student_semester.student_id', '=', 'course_student.student_id')
        ->join('courses', 'courses.id', '=', 'course_student.course_id')
        ->join('activities', 'activities.course_id', '=', 'courses.id')
        ->join('activity_criterion', 'activities.id', '=', 'activity_criterion.activity_id')
        ->join('criteria', 'criteria.id', '=', 'activity_criterion.criterion_id')
        ->join('rubric_activity', 'rubric_activity.activity_id', '=', 'activities.id')
        ->join('rubrics', 'rubrics.id', '=', 'rubric_activity.rubric_id')

        ->join('assessments', function ($join) {
          $join->on("assessments.student_id", '=', 'program_student_semester.student_id')
            ->on('assessments.activity_criterion_id', '=', 'activity_criterion.id');
        })
        ->where('courses.semester_id', $course_code->semester_id)
        ->whereIn('courses.program_id', $program_ids)
        ->where('courses.code', $course_code->code)
        ->where('courses.number', $course_code->number)
        ->whereIn('program_student_semester.program_id', $program_ids)
        ->whereIn('activity_criterion.criterion_id', $criteria_id)
        ->whereIn('criteria.id', $criteria_id)
        ->where('program_student_semester.semester_id', $course_code->semester_id)
        ->select('criteria.*')
        ->addSelect(DB::raw('count(case when assessments.score>= rubrics.expected_points then 1 else null end) as criteria_achieved'))
        ->addSelect(DB::raw('count(assessments.activity_criterion_id) as criteria_attempted'))
        ->groupBy('criteria.id');

      /* Log::info($table_per_criterion->toSql());
      Log::info(array($course_code));
      Log::info($program_ids);
      Log::info($criteria_id);*/
      Log::info('mera 1');
      Log::info(array($course_code));
      Log::info($table_per_criterion->get());
      return $table_per_criterion->get();
    }
  }
  public static function getStudentReportForOutcome($course_code = null)
  {
    if ($course_code) {
      //Log::info('entré');
      $criteria_id = DB::table('annual_plan_objective')
        ->where('typ_semester_course_id', $course_code->typ_semester_course_id)
        ->lists('criteria_id');
      Log::info($criteria_id);
      $program = Program::where('id', $course_code->program_id)->first();
      // // Log::info($program->code);
      if ($program->code == "") {
        $program_ids = DB::table('programs')
          ->where('school_id', $program->school->id)
          ->lists('programs.id');
        //    Log::info("estamos");
      } else $program_ids = array($program->id);

      // Log::info(array($course_code));

      //Table
      /* Student  criterion_attempted criterion passed
      *     1             2                   1
      *     2             7                   4
      *
      *
      */
      $table_per_student = DB::table('program_student_semester')
        ->join('course_student', 'program_student_semester.student_id', '=', 'course_student.student_id')
        ->join('courses', 'courses.id', '=', 'course_student.course_id')
        ->join('activities', 'activities.course_id', '=', 'courses.id')
        ->join('activity_criterion', 'activities.id', '=', 'activity_criterion.activity_id')
        ->join('criteria', 'criteria.id', '=', 'activity_criterion.criterion_id')
        ->join('rubric_activity', 'rubric_activity.activity_id', '=', 'activities.id')
        ->join('rubrics', 'rubrics.id', '=', 'rubric_activity.rubric_id')

        ->join('assessments', function ($join) {
          $join->on("assessments.student_id", '=', 'program_student_semester.student_id')
            ->on('assessments.activity_criterion_id', '=', 'activity_criterion.id');
        })
        ->where('courses.semester_id', $course_code->semester_id)
        ->whereIn('courses.program_id', $program_ids)
        ->where('courses.code', $course_code->code)
        ->where('courses.number', $course_code->number)
        ->whereIn('program_student_semester.program_id', $program_ids)
        ->whereIn('activity_criterion.criterion_id', $criteria_id)
        ->where('program_student_semester.semester_id', $course_code->semester_id)
        ->select('course_student.student_id')
        ->addSelect(DB::raw('count(assessments.activity_criterion_id) as criteria_attempted'))
        ->addSelect(DB::raw('count(case when assessments.score>=rubrics.expected_points then 1 else NULL end) as criteria_achieved'))
        ->groupBy('course_student.student_id');


      //Log::info($criteria_id);
      Log::info('los courseCode');
      Log::info(array($course_code));
      Log::info('los programas');
      Log::info($program_ids);

      Log::info($table_per_student->toSql());
      $students = $table_per_student->get();


      return $students;
    }
  }
  public function getReportObject()
  {
    $reportObject = new stdClass();

    $reportObject->criteriaReport = DB::table('courses')
      ->join('activities', 'activities.course_id', '=', 'courses.id')
      ->join('rubric_activity', 'rubric_activity.activity_id', '=', 'activities.id')
      ->join('rubrics', 'rubrics.id', '=', 'rubric_activity.rubric_id')
      ->join('activity_criterion', 'activity_criterion.activity_id', '=', 'activities.id')
      ->join('criteria', 'criteria.id', '=', 'activity_criterion.criterion_id')
      ->join('assessments', 'activity_criterion.id', '=', 'assessments.activity_criterion_id')
      ->select(DB::raw(
        "count(assessments.score) as assessed,
       count(case when assessments.score >= rubrics.expected_points then 1 else NULL end) as achieved,
       criteria.*"
      ))
      ->where('courses.id', $this->id)
      ->groupBy('criteria.id')
      ->get();
    //Log::info($this->id);
    $reportObject->outcomesReport = DB::table('courses')
      ->join('activities', 'activities.course_id', '=', 'courses.id')
      ->join('rubric_activity', 'rubric_activity.activity_id', '=', 'activities.id')
      ->join('rubrics', 'rubrics.id', '=', 'rubric_activity.rubric_id')
      ->join('activity_criterion', 'activity_criterion.activity_id', '=', 'activities.id')
      ->join('assessments', 'activity_criterion.id', '=', 'assessments.activity_criterion_id')
      ->join('criterion_objective_outcome', 'activity_criterion.criterion_id', '=', 'criterion_objective_outcome.criterion_id')
      ->join('outcomes', 'criterion_objective_outcome.outcome_id', '=', 'outcomes.id')
      ->select(
        DB::raw(
          "student_id, outcomes.name, outcomes.id,
        count(activity_criterion.criterion_id) as attempted,
        count(case when assessments.score >= rubrics.expected_points then 1 else null end) as achieved"
        )
      )
      ->where('courses.id', $this->id)
      ->groupBy(array('outcome_id', 'student_id'))
      ->get();

    return $reportObject;
  }

  public function outcomes_ach()
  {
    $criteria = DB::table('criteria')
      ->join('activity_criterion', 'activity_criterion.criterion_id', '=', 'criteria.id')
      ->join('activities', 'activity_criterion.activity_id', '=', 'activities.id')
      ->join('rubric_activity', 'rubric_activity.activity_id', '=', 'activities.id')
      ->join('rubrics', 'rubrics.id', '=', 'rubric_activity.rubric_id')
      ->join('courses', 'activities.course_id', '=', 'courses.id')
      ->join('criterion_objective_outcome', 'criterion_objective_outcome.criterion_id', '=', 'criteria.id')
      ->where('courses.id', '=', $this->id)
      ->where('activities.draft', 0)
      ->where('activities.diagnostic', 0)
      ->select(
        'criteria.id',
        'rubrics.expected_percentage as expected_percentage_students_achieving'/*'expected_percentage_students_achieving',*/,
        'activity_criterion.activity_id'
      )
      ->distinct()
      ->get();
    // Old data was formed like { "outcome1": cuantity_of_criteria_associated_passed, "outcome2":cuantity_of_criteria}

    $outcomes_achieved = [];

    foreach ($criteria as $criterion) {
      $students_attempted = Criterion::students_attempted($criterion->id, $criterion->activity_id);
      $students_achieved = Criterion::students_achieved($criterion->id, $criterion->activity_id);

      Log::info('estamos aqui');
      Log::info($students_attempted);

      if ($students_attempted) {
        $percentage_students_who_achieved = 100.0 * $students_achieved / $students_attempted;
      } else {
        $percentage_students_who_achieved = 0;
      }
      if ($percentage_students_who_achieved >= $criterion->expected_percentage_students_achieving) {
        $outcomes = DB::table('criterion_objective_outcome')
          ->where('criterion_id', $criterion->id)
          ->select('outcome_id')
          ->distinct()
          ->lists('outcome_id');

        foreach ($outcomes as $outcome_id) {
          if (array_key_exists($outcome_id, $outcomes_achieved)) $outcomes_achieved[$outcome_id] += 1;
          else $outcomes_achieved[$outcome_id] = 1;
        }
      }
    }
    Log::info(
      "OUTCOMES_ACHIEVED: "
    );
    Log::info(
      $outcomes_achieved
    );
    return $outcomes_achieved;
  }

  public function someSectionAssessed()
  {
    $all_sections = DB::table('courses')
      ->join('activities', 'activities.course_id', '=', 'courses.id')
      ->join('activity_criterion as ac', 'ac.activity_id', '=', 'activities.id')
      ->join('assessments', 'assessments.activity_criterion_id', '=', 'ac.id')
      ->where('courses.name', $this->name)
      ->where('code', $this->code)
      ->where('number', $this->number)
      ->where('semester_id', $this->semester_id)
      ->where(
        'program_id',
        $this->program_id
      )
      ->where('activities.draft', 0)
      ->where('activities.diagnostic', 0)
      ->groupBy('courses.id')
      ->count();

    return $all_sections;
  }

  public function isAssessed()
  {
    $assessed = DB::table('assessments')
      ->join('activity_criterion', 'assessments.activity_criterion_id', '=', 'activity_criterion.id')
      ->join('activities', 'activity_criterion.activity_id', '=', 'activities.id')
      ->where('activities.course_id', $this->id)
      ->count();
    //             Log::info("aqui".$assessed);

    if ($assessed) return true;
    else return false;
  }


  public function outcomes_achieved()
  {
    $criteria = DB::table('criteria')
      ->join('activity_criterion', 'activity_criterion.criterion_id', '=', 'criteria.id')
      ->join('activities', 'activity_criterion.activity_id', '=', 'activities.id')
      ->join('rubric_activity', 'rubric_activity.activity_id', '=', 'activities.id')
      ->join('rubrics', 'rubrics.id', '=', 'rubric_activity.rubric_id')
      ->join('courses', 'activities.course_id', '=', 'courses.id')
      ->join('criterion_objective_outcome', 'criterion_objective_outcome.criterion_id', '=', 'criteria.id')
      ->where('courses.id', '=', $this->id)
      ->select(
        'criteria.id',
        'rubrics.expected_percentage as expected_percentage_students_achieving'/*'expected_percentage_students_achieving',*/,
        'activity_criterion.activity_id'
      )
      ->distinct()
      ->get();

    $conteo = 0;
    foreach ($criteria as $criterion) {
      $students_attempted = Criterion::students_attempted($criterion->id, $criterion->activity_id);
      $students_achieved = Criterion::students_achieved($criterion->id, $criterion->activity_id);

      if ($students_attempted) {
        $percentage_students_who_achieved = 100.0 * $students_achieved / $students_attempted;
      } else {
        $percentage_students_who_achieved = 0;
      }
      if ($percentage_students_who_achieved >= $criterion->expected_percentage_students_achieving) {
        $conteo++;
      }
    }
    return $conteo;
  }

  public function semester()
  {
    return $this->belongsTo('Semester');
  }

  public function sectionsWithOutcome($outcome_id)
  {
    return Course::has('activities')->with(array('activities' => function ($query) use (&$outcome_id) {
      $query->where('outcomes_attempted', 'not like', '\'%"' . $outcome_id . '":0%\'');
    }))->where('code', $this->code)->where('number', $this->number)->get();
  }
}