// Package openapi ...
//
// Description : openapi ...
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 2026-01-05 17:20
package openapi

import (
	"reflect"

	"git.zhangdeman.cn/zhangdeman/consts"
	"github.com/getkin/kin-openapi/openapi3"
)

// NewGenerate 生成文档实例
func NewGenerate() *Generate {
	return &Generate{
		doc: &openapi3.T{
			Extensions: map[string]any{},
			OpenAPI:    "3.1.0",
			Components: &openapi3.Components{
				Extensions: map[string]any{},
				Origin: &openapi3.Origin{
					Key: &openapi3.Location{
						Line:   0,
						Column: 0,
					},
					Fields: make(map[string]openapi3.Location),
				},
				Schemas:         map[string]*openapi3.SchemaRef{},
				Parameters:      map[string]*openapi3.ParameterRef{},
				Headers:         map[string]*openapi3.HeaderRef{},
				RequestBodies:   map[string]*openapi3.RequestBodyRef{},
				Responses:       map[string]*openapi3.ResponseRef{},
				SecuritySchemes: map[string]*openapi3.SecuritySchemeRef{},
				Examples:        map[string]*openapi3.ExampleRef{},
				Links:           map[string]*openapi3.LinkRef{},
				Callbacks:       map[string]*openapi3.CallbackRef{},
			},
			Info: &openapi3.Info{
				Extensions: map[string]any{},
				Origin: &openapi3.Origin{
					Key: &openapi3.Location{
						Line:   0,
						Column: 0,
					},
					Fields: make(map[string]openapi3.Location),
				},
				Title:          "服务 API接口 文档",
				Description:    "服务 API接口 文档",
				TermsOfService: "",
				Contact: &openapi3.Contact{
					Extensions: map[string]any{},
					Origin: &openapi3.Origin{
						Key: &openapi3.Location{
							Line:   0,
							Column: 0,
						},
						Fields: make(map[string]openapi3.Location),
					},
					Name:  "developer",
					URL:   "",
					Email: "developer@test.com",
				},
				License: &openapi3.License{
					Extensions: map[string]any{},
					Origin: &openapi3.Origin{
						Key: &openapi3.Location{
							Line:   0,
							Column: 0,
						},
						Fields: make(map[string]openapi3.Location),
					},
					Name: consts.LicenseApache20,
					URL:  consts.LicenseUrlTable[consts.LicenseApache20],
				},
				Version: "0.0.1",
			},
			Paths: &openapi3.Paths{
				Extensions: map[string]any{},
				Origin: &openapi3.Origin{
					Key: &openapi3.Location{
						Line:   0,
						Column: 0,
					},
					Fields: make(map[string]openapi3.Location),
				},
			},
			Security: []openapi3.SecurityRequirement{},
			Servers:  []*openapi3.Server{},
			Tags:     []*openapi3.Tag{},
			ExternalDocs: &openapi3.ExternalDocs{
				Extensions:  map[string]any{},
				Origin:      nil,
				Description: "",
				URL:         "",
			},
		},
	}
}

// Generate 生成 OpenApi 标准规范的文档
type Generate struct {
	doc *openapi3.T
}

// AddApiDoc 添加接口文档
func (g *Generate) AddApiDoc(request any, response any) error {
	var (
		err          error
		requestType  reflect.Type
		responseType reflect.Type
		ok           bool
	)

	// 初始化请求数据与响应数据类型
	if requestType, ok = request.(reflect.Type); !ok {
		requestType = reflect.TypeOf(request)
		if requestType.Kind() == reflect.Ptr {
			requestType = requestType.Elem()
		}
	}

	if responseType, ok = response.(reflect.Type); !ok {
		responseType = reflect.TypeOf(response)
		if responseType.Kind() == reflect.Ptr {
			responseType = responseType.Elem()
		}
	}
	requestTypeStr := requestType.String()
	if _, exist := g.doc.Components.Schemas[requestTypeStr]; !exist {
		g.doc.Components.Schemas[requestTypeStr] = GenerateOpenAPISchema(requestType)
	}
	responseTypeStr := requestType.String()
	if _, exist := g.doc.Components.Schemas[responseTypeStr]; !exist {
		g.doc.Components.Schemas[responseTypeStr] = GenerateOpenAPISchema(responseType)
	}
	return err
}