package gateway

import (
	"git.sxidc.com/go-framework/baize/framework/core/api"
	"git.sxidc.com/go-tools/utils/http_client"
)

type UrlFormFunc func(c *api.Context, staticUrl string, historyRequests []BuilderRequest, resultMap map[string]any) (string, error)
type HeadersFormFunc func(c *api.Context, staticHeaders map[string]string, historyRequests []BuilderRequest, resultMap map[string]any) (map[string]string, error)
type BodyFormFunc func(c *api.Context, staticBody any, historyRequests []BuilderRequest, resultMap map[string]any) (any, error)
type QueryParamsFormFunc func(c *api.Context, staticQueryParams map[string]string, historyRequests []BuilderRequest, resultMap map[string]any) (map[string]string, error)
type PathParamsFormFunc func(c *api.Context, staticPathParams map[string]string, historyRequests []BuilderRequest, resultMap map[string]any) (map[string]string, error)

func FormJsonBodyWithTenantIDAndUserIDFunc(tenantIDFieldName string, userIDFieldName string) BodyFormFunc {
	return func(c *api.Context, staticBody any, historyRequests []BuilderRequest, resultMap map[string]any) (any, error) {
		err := AddJsonBodyTenantIDAndUserID(c, tenantIDFieldName, userIDFieldName)
		if err != nil {
			return nil, err
		}

		jsonBody, err := c.GetJsonBody()
		if err != nil {
			return nil, err
		}

		return jsonBody.Map(), nil
	}
}

func FormQueryParamsWithTenantIDAndUserIDFunc(tenantIDFieldName string, userIDFieldName string) QueryParamsFormFunc {
	return func(c *api.Context, staticQueryParams map[string]string, historyRequests []BuilderRequest, resultMap map[string]any) (map[string]string, error) {
		err := AddQueryParamsTenantIDAndUserID(c, tenantIDFieldName, userIDFieldName)
		if err != nil {
			return nil, err
		}

		return c.GetQueryParams().Map(), nil
	}
}

type BuilderRequest interface {
	Request(c *api.Context, request *http_client.Request, historyRequests []BuilderRequest, resultMap map[string]any) (BuilderRequest, error)
	Response() *http_client.Response
}

type PostRequest struct {
	Url             string
	Body            any
	UrlFormFunc     UrlFormFunc
	BodyFormFunc    BodyFormFunc
	HeadersFormFunc HeadersFormFunc

	headers  map[string]string
	response *http_client.Response
}

func (req *PostRequest) Request(c *api.Context, request *http_client.Request, historyRequests []BuilderRequest, resultMap map[string]any) (BuilderRequest, error) {
	preparedRequest, err := req.prepare(c, historyRequests, resultMap)
	if err != nil {
		return nil, err
	}

	response, err := request.Post(preparedRequest.Url, preparedRequest.Body,
		http_client.WithRequestHeaders(preparedRequest.headers))
	if err != nil {
		return nil, err
	}

	preparedRequest.response = response

	return preparedRequest, nil
}

func (req *PostRequest) Response() *http_client.Response {
	return req.response
}

func (req *PostRequest) prepare(c *api.Context, historyRequests []BuilderRequest, resultMap map[string]any) (*PostRequest, error) {
	preparedRequest := &PostRequest{
		Url:             req.Url,
		Body:            req.Body,
		UrlFormFunc:     req.UrlFormFunc,
		HeadersFormFunc: req.HeadersFormFunc,
		BodyFormFunc:    req.BodyFormFunc,
	}

	// 赋值默认body
	if req.Body == nil {
		cacheBody, err := c.GetBytesBody()
		if err != nil {
			return nil, err
		}

		preparedRequest.Body = cacheBody.Bytes()
	}

	// 赋值默认headers
	preparedRequest.headers = c.GetHeader().Map()

	// 构造url
	if preparedRequest.UrlFormFunc != nil {
		formedUrl, err := preparedRequest.UrlFormFunc(c, preparedRequest.Url, historyRequests, resultMap)
		if err != nil {
			return nil, err
		}

		preparedRequest.Url = formedUrl
	}

	// 构造body
	if preparedRequest.BodyFormFunc != nil {
		formedBody, err := preparedRequest.BodyFormFunc(c, preparedRequest.Body, historyRequests, resultMap)
		if err != nil {
			return nil, err
		}

		preparedRequest.Body = formedBody
	}

	// 构造headers
	if preparedRequest.HeadersFormFunc != nil {
		formedHeaders, err := preparedRequest.HeadersFormFunc(c, preparedRequest.headers, historyRequests, resultMap)
		if err != nil {
			return nil, err
		}

		preparedRequest.headers = formedHeaders
	}

	return preparedRequest, nil
}

type DeleteRequest struct {
	Url                 string
	QueryParams         map[string]string
	PathParams          map[string]string
	UrlFormFunc         UrlFormFunc
	HeadersFormFunc     HeadersFormFunc
	QueryParamsFormFunc QueryParamsFormFunc
	PathParamsFormFunc  PathParamsFormFunc

	headers  map[string]string
	response *http_client.Response
}

func (req *DeleteRequest) Request(c *api.Context, request *http_client.Request, historyRequests []BuilderRequest, resultMap map[string]any) (BuilderRequest, error) {
	preparedRequest, err := req.prepare(c, historyRequests, resultMap)
	if err != nil {
		return nil, err
	}

	response, err := request.Delete(preparedRequest.Url,
		http_client.WithRequestQueryParams(preparedRequest.QueryParams),
		http_client.WithRequestPathParams(preparedRequest.PathParams),
		http_client.WithRequestHeaders(preparedRequest.headers))
	if err != nil {
		return nil, err
	}

	preparedRequest.response = response

	return preparedRequest, nil
}

func (req *DeleteRequest) Response() *http_client.Response {
	return req.response
}

func (req *DeleteRequest) prepare(c *api.Context, historyRequests []BuilderRequest, resultMap map[string]any) (*DeleteRequest, error) {
	preparedRequest := &DeleteRequest{
		Url:                 req.Url,
		QueryParams:         req.QueryParams,
		PathParams:          req.PathParams,
		UrlFormFunc:         req.UrlFormFunc,
		HeadersFormFunc:     req.HeadersFormFunc,
		QueryParamsFormFunc: req.QueryParamsFormFunc,
		PathParamsFormFunc:  req.PathParamsFormFunc,
	}

	// 赋值默认查询参数
	if req.QueryParams == nil || len(req.QueryParams) == 0 {
		req.QueryParams = c.GetQueryParams().Map()
	}

	// 赋值默认路径参数
	if req.PathParams == nil || len(req.PathParams) == 0 {
		req.PathParams = c.GetPathParams().Map()
	}

	// 赋值默认headers
	preparedRequest.headers = c.GetHeader().Map()

	// 构造url
	if preparedRequest.UrlFormFunc != nil {
		formedUrl, err := preparedRequest.UrlFormFunc(c, preparedRequest.Url, historyRequests, resultMap)
		if err != nil {
			return nil, err
		}

		preparedRequest.Url = formedUrl
	}

	// 构造查询参数
	if preparedRequest.QueryParamsFormFunc != nil {
		formedQueryParams, err := preparedRequest.QueryParamsFormFunc(c, preparedRequest.QueryParams, historyRequests, resultMap)
		if err != nil {
			return nil, err
		}

		preparedRequest.QueryParams = formedQueryParams
	}

	// 构造路径参数
	if preparedRequest.PathParamsFormFunc != nil {
		formedPathParams, err := preparedRequest.PathParamsFormFunc(c, preparedRequest.PathParams, historyRequests, resultMap)
		if err != nil {
			return nil, err
		}

		preparedRequest.PathParams = formedPathParams
	}

	// 构造headers
	if preparedRequest.HeadersFormFunc != nil {
		formedHeaders, err := preparedRequest.HeadersFormFunc(c, preparedRequest.headers, historyRequests, resultMap)
		if err != nil {
			return nil, err
		}

		preparedRequest.headers = formedHeaders
	}

	return preparedRequest, nil
}

type PutRequest struct {
	Url             string
	Body            any
	UrlFormFunc     UrlFormFunc
	BodyFormFunc    BodyFormFunc
	HeadersFormFunc HeadersFormFunc

	headers  map[string]string
	response *http_client.Response
}

func (req *PutRequest) Request(c *api.Context, request *http_client.Request, historyRequests []BuilderRequest, resultMap map[string]any) (BuilderRequest, error) {
	preparedRequest, err := req.prepare(c, historyRequests, resultMap)
	if err != nil {
		return nil, err
	}

	response, err := request.Put(preparedRequest.Url, preparedRequest.Body,
		http_client.WithRequestHeaders(preparedRequest.headers))
	if err != nil {
		return nil, err
	}

	preparedRequest.response = response

	return preparedRequest, nil
}

func (req *PutRequest) Response() *http_client.Response {
	return req.response
}

func (req *PutRequest) prepare(c *api.Context, historyRequests []BuilderRequest, resultMap map[string]any) (*PutRequest, error) {
	preparedRequest := &PutRequest{
		Url:             req.Url,
		Body:            req.Body,
		UrlFormFunc:     req.UrlFormFunc,
		HeadersFormFunc: req.HeadersFormFunc,
		BodyFormFunc:    req.BodyFormFunc,
	}

	// 赋值默认body
	if req.Body == nil {
		cacheBody, err := c.GetBytesBody()
		if err != nil {
			return nil, err
		}

		preparedRequest.Body = cacheBody.Bytes()
	}

	// 赋值默认headers
	preparedRequest.headers = c.GetHeader().Map()

	// 构造url
	if preparedRequest.UrlFormFunc != nil {
		formedUrl, err := preparedRequest.UrlFormFunc(c, preparedRequest.Url, historyRequests, resultMap)
		if err != nil {
			return nil, err
		}

		preparedRequest.Url = formedUrl
	}

	// 构造body
	if preparedRequest.BodyFormFunc != nil {
		formedBody, err := preparedRequest.BodyFormFunc(c, preparedRequest.Body, historyRequests, resultMap)
		if err != nil {
			return nil, err
		}

		preparedRequest.Body = formedBody
	}

	// 构造headers
	if preparedRequest.HeadersFormFunc != nil {
		formedHeaders, err := preparedRequest.HeadersFormFunc(c, preparedRequest.headers, historyRequests, resultMap)
		if err != nil {
			return nil, err
		}

		preparedRequest.headers = formedHeaders
	}

	return preparedRequest, nil
}

type GetRequest struct {
	Url                 string
	QueryParams         map[string]string
	PathParams          map[string]string
	UrlFormFunc         UrlFormFunc
	HeadersFormFunc     HeadersFormFunc
	QueryParamsFormFunc QueryParamsFormFunc
	PathParamsFormFunc  PathParamsFormFunc

	headers  map[string]string
	response *http_client.Response
}

func (req *GetRequest) Request(c *api.Context, request *http_client.Request, historyRequests []BuilderRequest, resultMap map[string]any) (BuilderRequest, error) {
	preparedRequest, err := req.prepare(c, historyRequests, resultMap)
	if err != nil {
		return nil, err
	}

	response, err := request.Get(preparedRequest.Url,
		http_client.WithRequestQueryParams(preparedRequest.QueryParams),
		http_client.WithRequestPathParams(preparedRequest.PathParams),
		http_client.WithRequestHeaders(preparedRequest.headers))
	if err != nil {
		return nil, err
	}

	preparedRequest.response = response

	return preparedRequest, nil
}

func (req *GetRequest) Response() *http_client.Response {
	return req.response
}

func (req *GetRequest) prepare(c *api.Context, historyRequests []BuilderRequest, resultMap map[string]any) (*DeleteRequest, error) {
	preparedRequest := &DeleteRequest{
		Url:                 req.Url,
		QueryParams:         req.QueryParams,
		PathParams:          req.PathParams,
		UrlFormFunc:         req.UrlFormFunc,
		HeadersFormFunc:     req.HeadersFormFunc,
		QueryParamsFormFunc: req.QueryParamsFormFunc,
		PathParamsFormFunc:  req.PathParamsFormFunc,
	}

	// 赋值默认查询参数
	if req.QueryParams == nil || len(req.QueryParams) == 0 {
		req.QueryParams = c.GetQueryParams().Map()
	}

	// 赋值默认路径参数
	if req.PathParams == nil || len(req.PathParams) == 0 {
		req.PathParams = c.GetPathParams().Map()
	}

	// 赋值默认headers
	preparedRequest.headers = c.GetHeader().Map()

	// 构造url
	if preparedRequest.UrlFormFunc != nil {
		formedUrl, err := preparedRequest.UrlFormFunc(c, preparedRequest.Url, historyRequests, resultMap)
		if err != nil {
			return nil, err
		}

		preparedRequest.Url = formedUrl
	}

	// 构造查询参数
	if preparedRequest.QueryParamsFormFunc != nil {
		formedQueryParams, err := preparedRequest.QueryParamsFormFunc(c, preparedRequest.QueryParams, historyRequests, resultMap)
		if err != nil {
			return nil, err
		}

		preparedRequest.QueryParams = formedQueryParams
	}

	// 构造路径参数
	if preparedRequest.PathParamsFormFunc != nil {
		formedPathParams, err := preparedRequest.PathParamsFormFunc(c, preparedRequest.PathParams, historyRequests, resultMap)
		if err != nil {
			return nil, err
		}

		preparedRequest.PathParams = formedPathParams
	}

	// 构造headers
	if preparedRequest.HeadersFormFunc != nil {
		formedHeaders, err := preparedRequest.HeadersFormFunc(c, preparedRequest.headers, historyRequests, resultMap)
		if err != nil {
			return nil, err
		}

		preparedRequest.headers = formedHeaders
	}

	return preparedRequest, nil
}