<?php

class TeachingTemplate extends Model{

    public function tableName(){
        return 'teaching_template';
    }
    
    //获取模板列表
    public function getList($subjectId){
        $result = array();
        
        $sql = "select template_id,template_name,is_default from ".$this->tableName()." where subject_id = '{$subjectId}' order by is_default desc,create_time asc";
        $result = $this->sConn->createCommand($sql)->queryAll();
        return $result;
    }
    
    //模板复制
    public function copyTemplate($templateId,$subjectId){
        $result = '';
        $time = time();
        $sql = "select count(template_id) count from ".$this->tableName()." where subject_id ='{$subjectId}'";
        $count = $this->sConn->createCommand($sql)->queryRow();
        if($count && $count['count'] > 11){
            return "模板超过上限";
        }
        $sql = "select config_text from ".$this->tableName()." where template_id = ".$templateId;
        $data = $this->sConn->createCommand($sql)->queryRow();
        if($data){
            $json = $data['config_text'];
            $sql = "select count(template_id) count from ".$this->tableName()." where subject_id = ".$subjectId;
            $data_count = $this->sConn->createCommand($sql)->queryRow();
            if($data_count){
                $count = $data_count['count'];
                $templateName = "班级默认模板（".$count."）";
                $sql = "insert into ".$this->tableName()." (template_name,config_text,subject_id,is_default,create_time) "
                    . "values ('".$templateName."','".$json."',".$subjectId.",0,".$time.")";
                $data = $this->sConn->createCommand($sql)->execute();
                if(!$data){
                    $result = '操作失败';
                }
            }
            
        }
        return $result;
    }
    
    
    //模板改名
    public function changeName($templateId,$templateName,$subjectId){
        $status = 1;
        $error = '';
        $result = array(
            'status'=>$status,
            'error'=>$error
        );
        $sql = "select template_id from ".$this->tableName()." where subject_id = '{$subjectId}' and template_name = '{$templateName}'";
        $data = $this->sConn->createCommand($sql)->queryRow();
        if($data){
            return array("status"=>0,'error'=>'模板名称不能重复');
        }
        $sql = "update ".$this->tableName()." set template_name='{$templateName}' where template_id='{$templateId}'";
        $data = $this->sConn->createCommand($sql)->execute();
        if(!$data){
            return array("status"=>0,'error'=>'更新失败');
        }else{
            return array("status"=>1,'error'=>'');
        }
    }
    
    //模板删除
    public function delTemplate($templateId,$subjectId){
        $status = 1;
        $error = '';
        $default_template_id = 0;
        $sql = "select template_id from ".$this->tableName()." where is_default=1 and subject_id = '{$subjectId}'";
        $data = $this->sConn->createCommand($sql)->queryRow();
        if($data){
            $default_template_id = $data['template_id'];
            if($default_template_id == $templateId){
                return array("status"=>0,'error'=>'默认模板不能删除');
            }
        }
        
        $trans 	= $this->sConn->beginTransaction();
        try{
            $sql = "update teaching_class_set set template_id = ".$default_template_id." where template_id = ".$templateId;
            $this->sConn->createCommand($sql)->execute();
            $sql = "delete from ".$this->tableName()." where template_id = ".$templateId;
            $this->sConn->createCommand($sql)->execute();
            
            $trans->commit();
        } catch (Exception $e) {
            $trans->rollBack();
            $status = 0;
            $error = '删除失败';
        }
        return array("status"=>$status,"error"=>$error);
    }
    
    //模板查看
    public function detailTemplate($templateId){
        $result = '';
        $sql = "select template_id,config_text from ".$this->tableName()." where template_id =".$templateId;
        $data = $this->sConn->createCommand($sql)->queryRow();
        if($data){
            $result = $data['config_text'];
        }
        return $result;
    }
    //模板保存
    public function saveTemplate($templateId,$json){
        $status = true;
        $time = time();
        $sql = "update ".$this->tableName()." set config_text= '".$json."',update_time={$time} where template_id = ".$templateId;
        $data = $this->sConn->createCommand($sql)->execute();
        if(!$data){
            $status = false;
        }
        return $status;
    }
    
    //班级恢复默认
    public function restoreClassDefault($classId,$subjectId){
        $default_template_id = 0;
        $result = true;
        $sql = "select template_id from ".$this->tableName()." where subject_id = {$subjectId} and is_default=1";
        $data = $this->sConn->createCommand($sql)->queryRow();
        if($data){
            $default_template_id = $data['template_id'];
        }
        if($default_template_id){
            $sql = "select tt.template_id from teaching_template tt "
                    . "join teaching_class_set tcs on tt.template_id=tcs.template_id "
                    . "where tt.subject_id = '{$subjectId}' and tcs.class_id='{$classId}'";
            $template_id_data = $this->sConn->createCommand($sql)->queryRow();
            if($template_id_data){
                $template_id = $template_id_data['template_id'];
                if($template_id != $default_template_id){
                    $sql = "update teaching_class_set set template_id = '{$default_template_id}' where template_id ='{$template_id}' and class_id = '{$classId}'";
                    $status = $this->sConn->createCommand($sql)->execute();
                    if(!$status){
                        $result = false;
                    }
                }
            }
        }
        return $result;
    }
    
    //班级编辑模板
    public function editTemplate($classId,$subjectId,$templateId){
        $result = true;
        $trans 	= $this->sConn->beginTransaction();
        try{
            $sql = "select tcs.class_id,tcs.template_id from teaching_class_set tcs "
                    . "join teaching_template tt on tcs.template_id=tt.template_id "
                    . "where tcs.class_id in (".implode(",",$classId).") and tt.subject_id='{$subjectId}'";
            $data = $this->sConn->createCommand($sql)->queryAll();
            if($data){
                foreach($data as $k=>$v){
                    $sql = "delete from teaching_class_set where template_id = '{$v['template_id']}' and class_id = '{$v['class_id']}'";
                    $this->sConn->createCommand($sql)->execute();
                }
            }
            
            
            $insert = '';
            foreach($classId as $v){
                $insert .= "('".$v."','".$templateId."'),";
            }
            $insert_sql = "insert into teaching_class_set (class_id,template_id) values ".substr($insert, 0, -1);
            $this->sConn->createCommand($insert_sql)->execute();
            
            $trans->commit();
        } catch (Exception $e) {
            $trans->rollBack();
            $result = false;
        }
        return $result;
    }
    
    //产品班级列表
    public function listTemplate($subjectId,$teacherId,$grade,$classId,$limit=15,$page){
        $result = array();
        $where = array();
        $begin_limit = ($page - 1)*$limit;
        $end_limit = $page*$limit - 1;
        
        if($teacherId){
            $where[] = "tcr.teacher_id='{$teacherId}'";
        }
        if($grade){
            $where[] = "c.grade='{$grade}'";
        }
        if($classId){
            $where[] = "c.class_id='{$classId}'";
        }
        if($subjectId){
            $where[] = "tt.subject_id='{$subjectId}'";
            $where[] = "t.subjects='{$subjectId}'";
        }
        if($where){
            $where_sql = ' where '.implode(' and ',$where);
        }else{
            $where_sql = "";
        }
        $sql = "select count(*) count from "
                . "(select tcs.class_id from teaching_class_set tcs "
                . "join teaching_template tt on tcs.template_id = tt.template_id "
                . "join class c on c.class_id = tcs.class_id "
                . "join teacher_class_relation tcr on tcs.class_id = tcr.class_id "
                . "join teacher t on t.teacher_id=tcr.teacher_id ".$where_sql." "
                . "GROUP BY tcs.class_id) a";
        $data = $this->sConn->createCommand($sql)->queryRow();
        if($data){
            $count = $data['count'];
            $pages = ceil($count/$limit);
            
            $sql = "select c.class_id,c.class_name,c.grade,tt.template_id,tt.template_name,GROUP_CONCAT(t.teacher_name) teacher_name from teaching_class_set tcs "
                    . "join teaching_template tt on tcs.template_id = tt.template_id "
                    . "join class c on c.class_id = tcs.class_id "
                    . "join teacher_class_relation tcr on tcs.class_id = tcr.class_id "
                    . "join teacher t on t.teacher_id=tcr.teacher_id ".$where_sql." "
                    . "GROUP BY tcs.class_id "
                    . "ORDER BY c.grade asc,tcs.class_id asc "
                    . "limit ".$begin_limit.",".$limit;
            $data_list = $this->sConn->createCommand($sql)->queryAll();
            if($data_list){
                $result['count'] = $count;
                $result['list'] = $data_list;
                $result['page'] = $pages;
                $result['current_page'] = $page;
            }
        }
        return $result;
        
    }
    
    //教师列表
    public function teacherList($subjectId){
        $result = array();
        $sql = "select teacher_id,teacher_name from teacher where subjects = '{$subjectId}'";
        $result = $this->sConn->createCommand($sql)->queryAll();
        return $result;
    }
    
    //初始化模板
    public function initTemplate($subjectId,$json,$templateName){
        $result = true;
        $time = time();
        $sql = "select template_id from ".$this->tableName()." where subject_id = '{$subjectId}' and is_default = 1";
        $data = $this->sConn->createCommand($sql)->queryRow();
        if(!$data){
            $sql = "insert into ".$this->tableName()." (template_name,config_text,subject_id,is_default,create_time) "
                    . "values ('".$templateName."','".$json."',".$subjectId.",1,".$time.")";
            $data = $this->sConn->createCommand($sql)->execute();
            if(!$data){
                $result = false;
            }
        }
        return $result;
    }

}