package plugin

import (
	"encoding/base64"
	"reflect"
	"regexp"
	"strings"

	"apigo.cc/gojs"
	"apigo.cc/gojs/goja"
	"github.com/ssgo/config"
	"github.com/ssgo/u"
)

const pluginName = "api"

var confAes *u.Aes = u.NewAes([]byte("?GQ$0K0GgLdO=f+~L68PLm$uhKr4'=tV"), []byte("VFs7@sK61cj^f?HZ"))

type Result struct {
	StatusCode int
	Status     string
	Headers    map[string]string
	Data       any
}

func init() {
	config.LoadConfig(pluginName, &signerConfig)
	Config(signerConfig)

	obj := map[string]any{
		"config":         Config,
		"registerSigner": RegisterSigner,
		"sortParams":     SortParams,
	}

	for signer := range signerConfig {
		cfg := signerConfig[signer]
		o := map[string]any{}
		o["do"] = MakeAction(signer, nil)
		o["get"] = MakeAction(signer, map[string]any{
			"method": "GET",
		})
		o["post"] = MakeAction(signer, map[string]any{
			"method": "POST",
		})
		o["put"] = MakeAction(signer, map[string]any{
			"method": "PUT",
		})
		o["delete"] = MakeAction(signer, map[string]any{
			"method": "DELETE",
		})
		o["head"] = MakeAction(signer, map[string]any{
			"method": "HEAD",
		})
		o["options"] = MakeAction(signer, map[string]any{
			"method": "OPTIONS",
		})

		actions := map[string]map[string]any{}
		u.Convert((*cfg)["actions"], &actions)
		for k, v := range actions {
			o[k] = MakeAction(signer, v)
		}
		obj[signer] = o
	}

	tsCode := gojs.MakeTSCode(obj)
	mappedObj := gojs.ToMap(obj)
	gojs.Register("apigo.cc/gojs/"+pluginName, gojs.Module{
		ObjectMaker: func(vm *goja.Runtime) gojs.Map {
			return mappedObj
		},
		TsCode: tsCode,
		Desc:   pluginName,
	})
}

func MakeAction(signer string, actionCfg map[string]any) func(req *Request) (*Result, error) {
	cfg := &SignerConfig{data: map[string]any{}}
	if c := signerConfig[signer]; c != nil {
		u.Convert(c, cfg.data)
		delete(cfg.data, "actions")
	}
	defaultUrl := cfg.String("url", "")

	reqSet := &Request{}
	u.Convert(actionCfg, reqSet)

	delete(actionCfg, "headers")
	delete(actionCfg, "query")
	delete(actionCfg, "data")
	delete(actionCfg, "form")
	delete(actionCfg, "file")
	delete(actionCfg, "text")
	delete(actionCfg, "binary")
	delete(actionCfg, "requestType")
	delete(actionCfg, "callback")
	delete(actionCfg, "timeout")
	u.Convert(actionCfg, cfg.data)

	makeConfigVar(cfg.data, reflect.ValueOf(cfg.data))
	// 没有在外层配置url，或者url中有待处理的变量
	if defaultUrl == "" || strings.Contains(defaultUrl, "{{.") {
		defaultUrl = cfg.String("url", "")
	}

	return func(req *Request) (*Result, error) {
		if req == nil {
			req = &Request{}
		}
		var req1 *Request
		if reqSet != nil {
			req1v := *reqSet
			req1 = &req1v
			if req.Url != "" {
				req1.Url = req.Url
			}
			if req.Method != "" {
				req1.Method = req.Method
			}
			if req.Config != nil {
				if req1.Config == nil {
					req1.Config = map[string]string{}
				}
				for k, v := range req.Config {
					req1.Config[k] = v
				}
			}
			if req.Headers != nil {
				if req1.Headers == nil {
					req1.Headers = map[string]string{}
				}
				for k, v := range req.Headers {
					req1.Headers[k] = v
				}
			}
			if req.Query != nil {
				if req1.Query == nil {
					req1.Query = map[string]string{}
				}
				for k, v := range req.Query {
					req1.Query[k] = v
				}
			}
			if req.Data != nil {
				if req1.Data == nil {
					req1.Data = map[string]any{}
				}
				for k, v := range req.Data {
					req1.Data[k] = v
				}
			}
			if req.Form != nil {
				if req1.Form == nil {
					req1.Form = map[string]string{}
				}
				for k, v := range req.Form {
					req1.Form[k] = v
				}
			}
			if req.File != nil {
				if req1.File == nil {
					req1.File = map[string]any{}
				}
				for k, v := range req.File {
					req1.File[k] = v
				}
			}
			if req.Text != "" {
				req1.Text = req.Text
			}
			if req.Binary != nil {
				req1.Binary = req.Binary
			}
			if req.RequestType != "" {
				req1.RequestType = req.RequestType
			}
			if req.ResponseType != "" {
				req1.ResponseType = req.ResponseType
			}
			if req.Callback != nil {
				req1.Callback = req.Callback
			}
			if req.Timeout == 0 {
				req1.Timeout = req.Timeout
			}
		} else {
			req1 = req
		}
		if !strings.Contains(req1.Url, "://") && defaultUrl != "" {
			has1 := strings.HasSuffix(defaultUrl, "/")
			has2 := strings.HasPrefix(req1.Url, "/")
			if !has1 && !has2 {
				req1.Url = defaultUrl + "/" + req1.Url
			} else if has1 && has2 {
				req1.Url = defaultUrl + req1.Url[1:]
			} else {
				req1.Url = defaultUrl + req1.Url
			}
		}

		data, resp, err := Do(cfg, req1)
		headers := map[string]string{}
		statusCode := 0
		status := ""
		if resp != nil {
			statusCode = resp.StatusCode
			status = resp.Status
			for k, v := range resp.Header {
				headers[k] = v[0]
			}
		}
		return &Result{
			Status:     status,
			StatusCode: statusCode,
			Headers:    headers,
			Data:       data,
		}, err
	}
}

func Config(cfg map[string]*map[string]any) {
	for k, v := range cfg {
		if u.String((*v)["signer"]) == "" {
			(*v)["signer"] = k
		}
		// 尝试解密配置
		decryptConfig(reflect.ValueOf(v))
		makeConfigVar((*v), reflect.ValueOf(v))

		confLock.Lock()
		signerConfig[k] = v
		confLock.Unlock()
	}
}

func decryptConfig(v reflect.Value) {
	v = u.FinalValue(v)
	if v.Kind() == reflect.Map {
		for _, k := range v.MapKeys() {
			v2 := u.FinalValue(v.MapIndex(k))
			if v2.Kind() == reflect.String {
				if b64, err := base64.URLEncoding.DecodeString(v2.String()); err == nil {
					if dec, err := confAes.DecryptBytes(b64); err == nil {
						v.SetMapIndex(k, reflect.ValueOf(string(dec)))
					}
				}
			} else if v2.Kind() == reflect.Map || v.Kind() == reflect.Slice {
				decryptConfig(v2)
			}
		}
	} else if v.Kind() == reflect.Slice {
		for i := 0; i < v.Len(); i++ {
			v2 := u.FinalValue(v.Index(i))
			if v2.Kind() == reflect.String {
				if b64, err := base64.URLEncoding.DecodeString(v2.String()); err == nil {
					if dec, err := confAes.DecryptBytes(b64); err == nil {
						v.Index(i).Set(reflect.ValueOf(string(dec)))
					}
				}
			} else if v2.Kind() == reflect.Map || v.Kind() == reflect.Slice {
				decryptConfig(v2)
			}
		}
	}
}

var varMatcher = regexp.MustCompile(`{{\.([\w\.\-]+)}}`)
var configMatcher = regexp.MustCompile(`{{config\.([\w\.\-]+)}}`)
var fnMatcher = regexp.MustCompile(`{{/(\w+)\s*(.*?)}}`)

func makeConfigVar(cfg map[string]any, v reflect.Value) {
	v = u.FinalValue(v)
	if v.Kind() == reflect.Map {
		for _, k := range v.MapKeys() {
			v2 := u.FinalValue(v.MapIndex(k))
			if v2.Kind() == reflect.String {
				str := v2.String()
				if m := varMatcher.FindAllStringSubmatch(str, 100); m != nil {
					for _, m1 := range m {
						if v1 := getConfigValue(cfg, m1[1]); v1 != "" {
							str = strings.ReplaceAll(str, m1[0], v1)
						}
					}
					v.SetMapIndex(k, reflect.ValueOf(str))
				}
			} else if v2.Kind() == reflect.Map || v.Kind() == reflect.Slice {
				makeConfigVar(cfg, v2)
			}
		}
	} else if v.Kind() == reflect.Slice {
		for i := 0; i < v.Len(); i++ {
			v2 := u.FinalValue(v.Index(i))
			if v2.Kind() == reflect.String {
				str := v2.String()
				if m := varMatcher.FindAllStringSubmatch(str, 100); m != nil {
					for _, m1 := range m {
						if v1 := getConfigValue(cfg, m1[1]); v1 != "" {
							str = strings.ReplaceAll(str, m1[0], v1)
						}
					}
					v.Index(i).Set(reflect.ValueOf(str))
				}
			} else if v2.Kind() == reflect.Map || v.Kind() == reflect.Slice {
				makeConfigVar(cfg, v2)
			}
		}
	}
}