feat: add clientapi: mp.oauth2

clientapi/mp/oauth2/clientcredential.go

@@ -0,0 +1,11 @@
+package oauth2
+
+import (
+	"git.esin.io/lab/weixin/clientapi/request"
+)
+
+type ClientCredential struct {
+	request.Error
+	AccessToken string `json:"access_token"`
+	ExpiresIn   int32  `json:"expires_in"`
+}

clientapi/mp/oauth2/oauth2.go

@@ -0,0 +1,137 @@
+package oauth2
+
+import (
+	"context"
+	"net/url"
+
+	"git.esin.io/lab/weixin/clientapi/request"
+)
+
+type Oauth2Client struct {
+	appId     string
+	appSecret string
+}
+
+type GetCodeURLRequest struct {
+	RedirectURL, State, Scope string
+}
+
+func (c Oauth2Client) GetCodeURL(redirectURL, state, scope string) string {
+	endpoint := url.URL{
+		Scheme: "https",
+		Host:   "open.weixin.qq.com",
+		Path:   "/connect/oauth2/authorize",
+		RawQuery: url.Values{
+			"appid":         {c.appId},
+			"redirect_uri":  {redirectURL},
+			"response_type": {"code"},
+			"scope":         {scope},
+			"state":         {state},
+		}.Encode(),
+		Fragment: "wechat_redirect",
+	}
+	return endpoint.String()
+}
+
+func (c Oauth2Client) ExchangeToken(ctx context.Context, code string) (*Token, error) {
+	req := request.New(
+		"/sns/oauth2/access_token",
+		url.Values{
+			"grant_type": {"authorization_code"},
+			"appid":      {c.appId},
+			"secret":     {c.appSecret},
+			"code":       {code},
+		})
+	var resp Token
+	if err := req.Get(ctx, &resp); err != nil {
+		return nil, err
+	}
+
+	if err := resp.Err(); err != nil {
+		return nil, err
+	}
+
+	return &resp, nil
+}
+
+func (c Oauth2Client) GetUserinfo(ctx context.Context, accessToken, openid string) (*Userinfo, error) {
+	req := request.New(
+		"/sns/userinfo",
+		url.Values{
+			"access_token": {accessToken},
+			"openid":       {openid},
+			"lang":         {"zh_CN"},
+		},
+	)
+	var resp Userinfo
+	if err := req.Get(ctx, &resp); err != nil {
+		return nil, err
+	}
+
+	if err := resp.Err(); err != nil {
+		return nil, err
+	}
+	return &resp, nil
+}
+
+func (c Oauth2Client) RefreshToken(ctx context.Context, refreshToken, openid string) (*Token, error) {
+	req := request.New(
+		"/sns/oauth2/refresh_token",
+		url.Values{
+			"grant_type":    {"refresh_token"},
+			"appid":         {c.appId},
+			"refresh_token": {refreshToken},
+		},
+	)
+
+	var resp Token
+	if err := req.Get(ctx, &resp); err != nil {
+		return nil, err
+	}
+
+	if err := resp.Err(); err != nil {
+		return nil, err
+	}
+	return &resp, nil
+}
+
+func (c Oauth2Client) ValidateToken(ctx context.Context, accessToken, openid string) error {
+	req := request.New(
+		"/sns/auth",
+		url.Values{
+			"access_token": {accessToken},
+			"openid":       {openid},
+		},
+	)
+
+	var resp request.Error
+	if err := req.Get(ctx, &resp); err != nil {
+		return err
+	}
+
+	if err := resp.Err(); err != nil {
+		return err
+	}
+	return nil
+}
+
+func (c Oauth2Client) GetClientCredential(ctx context.Context) (*ClientCredential, error) {
+	req := request.New(
+		"/cgi-bin/token",
+		url.Values{
+			"grant_type": {"client_credential"},
+			"appid":      {c.appId},
+			"secret":     {c.appSecret},
+		},
+	)
+
+	var resp ClientCredential
+	if err := req.Get(ctx, &resp); err != nil {
+		return nil, err
+	}
+	if err := resp.Err(); err != nil {
+		return nil, err
+	}
+
+	return &resp, nil
+}

clientapi/mp/oauth2/token.go

@@ -0,0 +1,14 @@
+package oauth2
+
+import (
+	"git.esin.io/lab/weixin/clientapi/request"
+)
+
+type Token struct {
+	request.Error
+	AccessToken  string `json:"access_token"`  //获取到的凭证
+	ExpiresIn    int32  `json:"expires_in"`    //凭证有效时间，单位：秒
+	RefreshToken string `json:"refresh_token"` //有效期为30天，当失效之后，需要用户重新授
+	OpenID       string `json:"openid"`
+	Scope        string `json:"scope"`
+}

clientapi/mp/oauth2/userinfo.go

@@ -0,0 +1,18 @@
+package oauth2
+
+import (
+	"git.esin.io/lab/weixin/clientapi/request"
+)
+
+type Userinfo struct {
+	request.Error
+	OpenID     string   `json:"openid"`
+	NickName   string   `json:"nickname"`
+	Sex        int8     `json:"sex"`
+	Province   string   `json:"province"`
+	City       string   `json:"city"`
+	Country    string   `json:"country"`
+	HeadImgURL string   `json:"headimgurl"`
+	Privilege  []string `json:"privilege"`
+	UnionID    string   `json:"unionid"`
+}