Add CI to verify that the library is buildable and correct on style and format

.github/workflows/CI.yaml

@@ -0,0 +1,49 @@
+name: CI
+on:
+  push:
+    branches: [main]
+  pull_request:
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v7
+      - uses: actions/setup-go@v7
+        with:
+          go-version: 1.26
+      - run: go build ./...
+
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v7
+      - uses: actions/setup-go@v7
+        with:
+          go-version: 1.26
+      - uses: golangci/golangci-lint-action@v9
+        with:
+          version: v2.12
+
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v7
+      - uses: actions/setup-go@v7
+        with:
+          go-version: 1.26
+      - run: go test ./... -race -cover
+
+  cli-scaffold:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v7
+      - uses: actions/setup-go@v7
+        with:
+          go-version: 1.26
+      - name: CLI scaffolds a buildable project
+        run: |
+          go build -o /tmp/summer ./cmd/summer
+          cd $(mktemp -d)
+          /tmp/summer -b main init <<< "testproject"
+          go mod tidy
+          go build -o /tmp/build/ ./...

.golangci.yaml

@@ -0,0 +1,7 @@
+version: "2"
+linters:
+  default: standard
+
+formatters:
+  enable:
+    - gofmt

cmd/summer/main.go

@@ -3,12 +3,13 @@ package main
 import (
 	"bufio"
 	"fmt"
-	"github.com/spf13/cobra"
 	"io"
 	"os"
 	"os/exec"
 	"path/filepath"
 	"strings"
+
+	"github.com/spf13/cobra"
 )
 
 const (
@@ -347,7 +348,12 @@ func copyFileContents(srcFile, dstFile string) (err error) {
 	if err != nil {
 		return
 	}
-	defer in.Close()
+	defer func(in *os.File) {
+		err := in.Close()
+		if err != nil {
+			return
+		}
+	}(in)
 
 	info, err := in.Stat()
 	if err != nil {
@@ -363,7 +369,10 @@ func copyFileContents(srcFile, dstFile string) (err error) {
 		if err != nil {
 			_ = os.Remove(dstFile)
 		}
-		out.Close()
+		err := out.Close()
+		if err != nil {
+			return
+		}
 	}()
 
 	_, err = io.Copy(out, in)

pkg/log/logger.go

@@ -75,17 +75,6 @@ func WithContext(ctx context.Context, logger *zap.Logger) *zap.Logger {
 	return logger
 }
 
-// prettyEncodeCaller add padding to the caller string
-func prettyEncodeCaller(caller zapcore.EntryCaller, enc zapcore.PrimitiveArrayEncoder) {
-	const fixedWidth = 25
-	callerStr := caller.TrimmedPath()
-	if len(callerStr) < fixedWidth {
-		callerStr += strings.Repeat(" ", fixedWidth-len(callerStr))
-	}
-	callerStr += "\t"
-	enc.AppendString(callerStr)
-}
-
 // relativePrettyCallerEncoder returns a zapcore.CallerEncoder that formats the caller path relative to the root directory
 // it enables clickable links in the GoLand console output
 func relativePrettyCallerEncoder(rootDir string) zapcore.CallerEncoder {