// Copyright 2017 gf Author(https://github.com/gogf/gf). All Rights Reserved.
//
// This Source Code Form is subject to the terms of the MIT License.
// If a copy of the MIT was not distributed with this file,
// You can obtain one at https://github.com/gogf/gf.

package ghttp

import (
	"github.com/gogf/gf/container/gvar"
	"github.com/gogf/gf/internal/structs"
	"github.com/gogf/gf/util/gconv"
)

// 获得router、post或者get提交的参数，如果有同名参数，那么按照router->get->post优先级进行覆盖
func (r *Request) GetRequest(key string, def ...interface{}) []string {
	v := r.GetRouterArray(key)
	if v == nil {
		v = r.GetQuery(key)
	}
	if v == nil {
		v = r.GetPost(key)
	}
	if v == nil && len(def) > 0 {
		return gconv.Strings(def[0])
	}
	return v
}

func (r *Request) GetRequestVar(key string, def ...interface{}) *gvar.Var {
	value := r.GetRequest(key, def...)
	if value != nil {
		return gvar.New(value[0])
	}
	return gvar.New(nil)
}

func (r *Request) GetRequestString(key string, def ...interface{}) string {
	value := r.GetRequest(key, def...)
	if value != nil && value[0] != "" {
		return value[0]
	}
	return ""
}

func (r *Request) GetRequestBool(key string, def ...interface{}) bool {
	value := r.GetRequestString(key, def...)
	if value != "" {
		return gconv.Bool(value)
	}
	return false
}

func (r *Request) GetRequestInt(key string, def ...interface{}) int {
	value := r.GetRequestString(key, def...)
	if value != "" {
		return gconv.Int(value)
	}
	return 0
}

func (r *Request) GetRequestInts(key string, def ...interface{}) []int {
	value := r.GetRequest(key, def...)
	if value != nil {
		return gconv.Ints(value)
	}
	return nil
}

func (r *Request) GetRequestUint(key string, def ...interface{}) uint {
	value := r.GetRequestString(key, def...)
	if value != "" {
		return gconv.Uint(value)
	}
	return 0
}

func (r *Request) GetRequestFloat32(key string, def ...interface{}) float32 {
	value := r.GetRequestString(key, def...)
	if value != "" {
		return gconv.Float32(value)
	}
	return 0
}

func (r *Request) GetRequestFloat64(key string, def ...interface{}) float64 {
	value := r.GetRequestString(key, def...)
	if value != "" {
		return gconv.Float64(value)
	}
	return 0
}

func (r *Request) GetRequestFloats(key string, def ...interface{}) []float64 {
	value := r.GetRequest(key, def...)
	if value != nil {
		return gconv.Floats(value)
	}
	return nil
}

func (r *Request) GetRequestArray(key string, def ...interface{}) []string {
	return r.GetRequest(key, def...)
}

func (r *Request) GetRequestStrings(key string, def ...interface{}) []string {
	return r.GetRequest(key, def...)
}

func (r *Request) GetRequestInterfaces(key string, def ...interface{}) []interface{} {
	value := r.GetRequest(key, def...)
	if value != nil {
		return gconv.Interfaces(value)
	}
	return nil
}

// 获取指定键名的关联数组，并且给定当指定键名不存在时的默认值
// 需要注意的是，如果其中一个字段为数组形式，那么只会返回第一个元素，如果需要获取全部的元素，请使用GetRequestArray获取特定字段内容
func (r *Request) GetRequestMap(def ...map[string]string) map[string]string {
	m := r.GetQueryMap()
	if len(m) == 0 {
		m = r.GetPostMap()
	}
	if len(def) > 0 {
		for k, v := range def[0] {
			if _, ok := m[k]; !ok {
				m[k] = v
			}
		}
	}
	return m
}

// 将所有的request参数映射到struct属性上，参数object应当为一个struct对象的指针, mapping为非必需参数，自定义参数与属性的映射关系
func (r *Request) GetRequestToStruct(pointer interface{}, mapping ...map[string]string) error {
	tagMap := structs.TagMapName(pointer, paramTagPriority, true)
	if len(mapping) > 0 {
		for k, v := range mapping[0] {
			tagMap[k] = v
		}
	}
	params := make(map[string]interface{})
	for k, v := range r.GetRequestMap() {
		params[k] = v
	}
	if len(params) == 0 {
		if j := r.GetJson(); j != nil {
			params = j.ToMap()
		}
	}
	return gconv.StructDeep(params, pointer, tagMap)
}