Display CLI changelog with 'doppler changelog' command

This pulls the changelog from cli.doppler.com/changes.

pkg/cmd/changelog.go

@@ -0,0 +1,48 @@
+/*
+Copyright © 2020 Doppler <support@doppler.com>
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+package cmd
+
+import (
+	"github.com/DopplerHQ/cli/pkg/http"
+	"github.com/DopplerHQ/cli/pkg/models"
+	"github.com/DopplerHQ/cli/pkg/printer"
+	"github.com/DopplerHQ/cli/pkg/utils"
+	"github.com/spf13/cobra"
+)
+
+var changelogCmd = &cobra.Command{
+	Use:   "changelog",
+	Short: "view the CLI's changelog",
+	Args:  cobra.NoArgs,
+	Run: func(cmd *cobra.Command, args []string) {
+		number := utils.GetIntFlag(cmd, "number", 16)
+		jsonFlag := utils.OutputJSON
+
+		response, apiError := http.GetChangelog()
+		if !apiError.IsNil() {
+			utils.HandleError(apiError.Unwrap(), apiError.Message)
+		}
+
+		changes := models.ParseChangeLog(response, number)
+		printer.ChangeLog(changes, number, jsonFlag)
+	},
+}
+
+func init() {
+	changelogCmd.Flags().IntP("number", "n", 3, "number of versions to show changes for")
+
+	rootCmd.AddCommand(changelogCmd)
+}

pkg/cmd/update.go

@@ -60,6 +60,8 @@ func installCLIUpdate() {
 
 	if wasUpdated {
 		utils.Log(fmt.Sprintf("Installed CLI %s", installedVersion))
+		utils.Log("Tip: see what's new with the 'doppler changelog' command")
+		utils.Log("")
 	} else {
 		utils.Log(fmt.Sprintf("You are already running the latest version"))
 	}

pkg/http/github.go

@@ -69,3 +69,13 @@ func GetCLIInstallScript() ([]byte, Error) {
 	}
 	return resp, Error{}
 }
+
+// GetChangelog of CLI releases
+func GetChangelog() ([]byte, Error) {
+	headers := map[string]string{"Accept": "application/json"}
+	_, resp, err := GetRequest("https://cli.doppler.com", true, headers, "/changes", nil)
+	if err != nil {
+		return nil, Error{Err: err, Message: "Unable to fetch changelog"}
+	}
+	return resp, Error{}
+}

pkg/models/workers.go

@@ -0,0 +1,53 @@
+/*
+Copyright © 2020 Doppler <support@doppler.com>
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+package models
+
+import (
+	"encoding/json"
+
+	"github.com/DopplerHQ/cli/pkg/utils"
+)
+
+// ChangeLog lists changes
+type ChangeLog struct {
+	Changes []string `json:"changes"`
+}
+
+// ParseChangeLog parse change log
+func ParseChangeLog(response []byte, max int) map[string]ChangeLog {
+	var releaseMap []map[string]interface{}
+	if err := json.Unmarshal(response, &releaseMap); err != nil {
+		utils.HandleError(err, "Unable to parse changelog")
+	}
+
+	changes := map[string]ChangeLog{}
+
+	for i, release := range releaseMap {
+		if i >= max {
+			break
+		}
+
+		v := release["version"].(string)
+		var list []string
+		for _, change := range release["changes"].([]interface{}) {
+			list = append(list, change.(string))
+		}
+
+		changes[v] = ChangeLog{Changes: list}
+	}
+
+	return changes
+}

pkg/printer/print.go

@@ -26,6 +26,7 @@ import (
 
 	"github.com/DopplerHQ/cli/pkg/models"
 	"github.com/DopplerHQ/cli/pkg/utils"
+	"github.com/DopplerHQ/cli/pkg/version"
 	"github.com/jedib0t/go-pretty/table"
 	"github.com/jedib0t/go-pretty/text"
 	"gopkg.in/gookit/color.v1"
@@ -406,3 +407,28 @@ func ConfigServiceToken(token models.ConfigServiceToken, jsonFlag bool, plain bo
 	rows := [][]string{{token.Name, token.Token, token.Slug, token.Project, token.Environment, token.Config, token.CreatedAt}}
 	Table([]string{"name", "token", "slug", "project", "environment", "config", "created at"}, rows, TableOptions())
 }
+
+// ChangeLog print change log
+func ChangeLog(changes map[string]models.ChangeLog, max int, jsonFlag bool) {
+	if jsonFlag {
+		JSON(changes)
+	} else {
+		i := 0
+		for v, cl := range changes {
+			if i >= max {
+				break
+			}
+			if i != 0 {
+				utils.Log("")
+			}
+
+			utils.Log(color.Cyan.Sprintf("CLI %s", version.Normalize(v)))
+			for _, change := range cl.Changes {
+				utils.Log(fmt.Sprintf("· %s", change))
+			}
+
+			i = i + 1
+		}
+	}
+
+}