<?php
namespace App\Search\Builders;

use Closure;
use Laravel\Scout\Builder;

class ElasticsearchBuilder extends Builder
{
    /**
     * @param string|Closure $field
     * @param mixed $value
     * @return $this
     */
    public function where($field, $value = null)
    {
        if ($field instanceof Closure) {
            $shouldBuilder=new SubBuilder();
            call_user_func($field, $shouldBuilder);
            $this->wheres['must']['query'][]=$shouldBuilder->getQueryData();
            return $this;
        }
        $this->wheres['must']['where'][]=[
            'field'=>$field,
            'value'=>$value
        ];
        return $this;
    }


    /**
     * @param string|Closure $field
     * @param string|int $value
     * @return $this
     */
    public function whereNot($field, $value = null)
    {
        if ($field instanceof Closure) {
            $shouldBuilder=new SubBuilder();
            call_user_func($field, $shouldBuilder);
            $this->wheres['must_not']['query'][]=$shouldBuilder->getQueryData();
            return $this;
        }
        $this->wheres['must_not']['where'][]=[
            'field'=>$field,
            'value'=>$value
        ];
        return $this;
    }

    /**
     * @param string|Closure $field
     * @param string|int $value
     * @return $this
     */
    public function whereOr($field, $value = null)
    {
        if ($field instanceof Closure) {
            $shouldBuilder=new SubBuilder();
            call_user_func($field, $shouldBuilder);
            $this->wheres['should']['query'][]=$shouldBuilder->getQueryData();
            return $this;
        }
        $this->wheres['should']['where'][]=[
            'field'=>$field,
            'value'=>$value
        ];
        return $this;
    }


    /**
     * @param string $field
     * @param array $value
     * @param bool $isKeyword
     * @return $this
     */
    public function whereIn(string $field, array $value, $isKeyword = true)
    {
        if ($isKeyword) {
            $this->wheres['in']['terms'][]=[
                'field'=>$field,
                'value'=>$value
            ];
        } else {
            $this->wheres['in']['phrase'][]=[
                'field'=>$field,
                'value'=>$value
            ];
        }

        return $this;
    }

    /**
     * @param string $field
     * @param array $value
     * @param bool $isKeyword
     * @return $this
     */
    public function whereOrIn(string $field, array $value, $isKeyword = true)
    {
        if ($isKeyword) {
            $this->wheres['should_in']['terms'][]=[
                'field'=>$field,
                'value'=>$value
            ];
        } else {
            $this->wheres['should_in']['phrase'][]=[
                'field'=>$field,
                'value'=>$value
            ];
        }
        return $this;
    }

    /**
     * @param string $field
     * @param array $value
     * @param bool $isKeyword
     * @return $this
     */
    public function whereNotIn(string $field, array $value, $isKeyword = true)
    {
        if ($isKeyword) {
            $this->wheres['not_in']['terms'][]=[
                'field'=>$field,
                'value'=>$value
            ];
        } else {
            $this->wheres['not_in']['phrase'][]=[
                'field'=>$field,
                'value'=>$value
            ];
        }
        return $this;
    }

    /**
     * @param string $field
     * @param null $min
     * @param null $max
     * @param bool $equal
     * @return $this
     */
    public function whereRange(string $field, $min = null, $max = null, $equal = true)
    {
        $equal=$equal?'e':'';
        $range=[];
        if (!is_null($min)) {
            $range['gt'.$equal]=$min;
        }
        if (!is_null($max)) {
            $range['lt'.$equal]=$max;
        }
        $this->wheres['must']['range'][]=[
            'field'=>$field,
            'value'=>$range
        ];
        return $this;
    }

    /**
     * @param string $field
     * @param null $min
     * @param null $max
     * @param bool $equal
     * @return $this
     */
    public function whereOrRange(string $field, $min = null, $max = null, $equal = true)
    {
        $equal=$equal?'e':'';
        $range=[];
        if (!is_null($min)) {
            $range['gt'.$equal]=$min;
        }
        if (!is_null($max)) {
            $range['lt'.$equal]=$max;
        }
        $this->wheres['should']['range'][]=[
            'field'=>$field,
            'value'=>$range
        ];
        return $this;
    }

    /**
     * @param string $field
     * @param null $min
     * @param null $max
     * @param bool $equal
     * @return $this
     */
    public function whereNotRange(string $field, $min = null, $max = null, $equal = true)
    {
        $equal=$equal?'e':'';
        $range=[];
        if (!is_null($min)) {
            $range['gt'.$equal]=$min;
        }
        if (!is_null($max)) {
            $range['lt'.$equal]=$max;
        }
        $this->wheres['must_not']['range'][]=[
            'field'=>$field,
            'value'=>$range
        ];
        return $this;
    }

    /**
     * @param string $field
     * @param $lat
     * @param $lon
     * @param $distance
     * @return $this
     */
    public function whereLocation(string $field, $lat, $lon, $distance)
    {
        $this->wheres['locations'][]=['distance'=>$distance, $field=>['lat'=>$lat, "lon"=>$lon]];
        return $this;
    }


    public function getQueryData()
    {
        $query = [];
        $must_data = [];
        $must_not_data = [];
        $should_data = [];
        if (empty($this->wheres)) {
            return $query;
        }

        //处理and逻辑
        if (isset($this->wheres['must'])) {
            if (isset($this->wheres['must']['where'])) {
                foreach ($this->wheres['must']['where'] as $value) {
                    $must_data[]=[
                        "match_phrase"=>[$value['field'] => $value['value']]
                    ];
                }
            }

            if (isset($this->wheres['must']['range'])) {
                foreach ($this->wheres['must']['range'] as $value) {
                    $must_data[]=[
                        "range"=>[$value['field'] => $value['value']]
                    ];
                }
            }
        }

        if (isset($this->wheres['in'])) {
            if (isset($this->wheres['in']['terms'])) {
                foreach ($this->wheres['in']['terms'] as $value) {
                    $must_data[]=[
                        "terms"=>[$value['field'] => $value['value']]
                    ];
                }
            }

            if (isset($this->wheres['in']['phrase'])) {
                $sub_data = [];
                foreach ($this->wheres['in']['phrase'] as $value) {
                    foreach ($value['value'] as $v) {
                        $sub_data[]=[
                            "match_phrase"=>[$value['field'] => $v]
                        ];
                    }
                }
                $must_data[] = ['bool' => ['should'=>$sub_data]];
            }
        }

        if (isset($this->wheres['must']['query'])) {
            $must_data=array_merge($must_data, $this->wheres['must']['query']);
        }

        //处理not逻辑
        if (isset($this->wheres['must_not'])) {
            if (isset($this->wheres['must_not']['where'])) {
                foreach ($this->wheres['must_not']['where'] as $value) {
                    $must_not_data[]=[
                        "match_phrase"=>[$value['field'] => $value['value']]
                    ];
                }
            }

            if (isset($this->wheres['must_not']['range'])) {
                foreach ($this->wheres['must_not']['range'] as $value) {
                    $must_not_data[]=[
                        "range"=>[$value['field'] => $value['value']]
                    ];
                }
            }
        }

        if (isset($this->wheres['not_in'])) {
            if (isset($this->wheres['not_in']['terms'])) {
                foreach ($this->wheres['not_in']['terms'] as $value) {
                    $must_not_data[]=[
                        "terms"=>[$value['field'] => $value['value']]
                    ];
                }
            }

            if (isset($this->wheres['not_in']['phrase'])) {
                foreach ($this->wheres['not_in']['phrase'] as $value) {
                    foreach ($value['value'] as $v) {
                        $must_not_data[]=[
                            "match_phrase"=>[$value['field'] => $v]
                        ];
                    }
                }
            }
        }

        if (isset($this->wheres['must_not']['query'])) {
            $must_not_data=array_merge($must_not_data, $this->wheres['must_not']['query']);
        }

        //处理or逻辑
        if (isset($this->wheres['should'])) {
            if (isset($this->wheres['should']['where'])) {
                foreach ($this->wheres['should']['where'] as $value) {
                    $should_data[]=[
                        "match_phrase"=>[$value['field'] => $value['value']]
                    ];
                }
            }

            if (isset($this->wheres['should']['range'])) {
                foreach ($this->wheres['should']['range'] as $value) {
                    $should_data[]=[
                        "range"=>[$value['field'] => $value['value']]
                    ];
                }
            }
        }

        if (isset($this->wheres['should_in'])) {
            if (isset($this->wheres['should_in']['terms'])) {
                foreach ($this->wheres['should_in']['terms'] as $value) {
                    $should_data[]=[
                        "terms"=>[$value['field'] => $value['value']]
                    ];
                }
            }

            if (isset($this->wheres['should_in']['phrase'])) {
                foreach ($this->wheres['should_in']['phrase'] as $value) {
                    foreach ($value['value'] as $v) {
                        $should_data[]=[
                            "match_phrase"=>[$value['field'] => $v]
                        ];
                    }
                }
            }
        }

        if (isset($this->wheres['should']['query'])) {
            $should_data=array_merge($should_data, $this->wheres['should']['query']);
        }


        if ($must_data) {
            $query['must']=$must_data;
        }

        if ($must_not_data) {
            $query['must_not']=$must_not_data;
        }

        if ($should_data) {
            $query['should']=$should_data;
        }

        if (isset($this->wheres['locations'])) {
            $data =[];
            foreach ($this->wheres['locations'] as $location) {
                $data[]=[
                    "geo_distance"=>$location
                ];
            }
            $query['filter']=$data;
        }
        return $query;
    }

}