claude go reimplement

cmd/kjv-api/main.go

@@ -0,0 +1,93 @@
+// kjv-api: the King James Bible web API as one program plus one SQLite
+// database (kjv.db) that holds the text, every page and asset, user data and
+// the logs.
+package main
+
+import (
+	"flag"
+	"fmt"
+	"os"
+	"path/filepath"
+
+	"kjv-api/internal/kjv"
+)
+
+const usage = `usage:
+  kjv-api [-db kjv.db] [-addr 127.0.0.1:1611]       run the server
+  kjv-api import-assets [-db kjv.db] DIR   load the pages, scripts, styles and data files from the assets folder into the database
+  kjv-api logs [-db kjv.db] [-n 100]       print the newest log lines stored in the database
+`
+
+func findDB(flagValue string) string {
+	if flagValue != "" {
+		return flagValue
+	}
+	if v := os.Getenv("KJV_DB"); v != "" {
+		return v
+	}
+	candidates := []string{"kjv.db"}
+	if exe, err := os.Executable(); err == nil {
+		candidates = append(candidates, filepath.Join(filepath.Dir(exe), "kjv.db"))
+	}
+	for _, c := range candidates {
+		if _, err := os.Stat(c); err == nil {
+			return c
+		}
+	}
+	return "kjv.db"
+}
+
+func main() {
+	args := os.Args[1:]
+	if len(args) > 0 {
+		switch args[0] {
+		case "import-assets":
+			fs := flag.NewFlagSet("import-assets", flag.ExitOnError)
+			db := fs.String("db", "", "path to kjv.db")
+			fs.Parse(args[1:])
+			if fs.NArg() != 1 {
+				fmt.Fprint(os.Stderr, usage)
+				os.Exit(2)
+			}
+			dbPath := findDB(*db)
+			if _, err := os.Stat(dbPath); err != nil {
+				fatal(err)
+			}
+			if err := kjv.ImportAssets(dbPath, fs.Arg(0)); err != nil {
+				fatal(err)
+			}
+			return
+		case "logs":
+			fs := flag.NewFlagSet("logs", flag.ExitOnError)
+			db := fs.String("db", "", "path to kjv.db")
+			n := fs.Int("n", 100, "number of lines")
+			fs.Parse(args[1:])
+			if err := kjv.ShowLogs(findDB(*db), *n); err != nil {
+				fatal(err)
+			}
+			return
+		case "help", "-h", "--help":
+			fmt.Print(usage)
+			return
+		}
+	}
+	fs := flag.NewFlagSet("kjv-api", flag.ExitOnError)
+	dbFlag := fs.String("db", "", "path to kjv.db (default: $KJV_DB, ./kjv.db, next to the program)")
+	addr := fs.String("addr", envOr("KJV_ADDR", "127.0.0.1:1611"), "listen address (localhost only)")
+	fs.Parse(args)
+	if err := kjv.Run(findDB(*dbFlag), *addr); err != nil {
+		fatal(err)
+	}
+}
+
+func fatal(err error) {
+	fmt.Fprintln(os.Stderr, "kjv-api:", err)
+	os.Exit(1)
+}
+
+func envOr(key, def string) string {
+	if v := os.Getenv(key); v != "" {
+		return v
+	}
+	return def
+}