From f33c435383233cefd58b56fad5272f41d7a80f22 Mon Sep 17 00:00:00 2001
From: Or Elimelech <vic3lord@users.noreply.github.com>
Date: Tue, 15 Oct 2024 23:14:10 +0300
Subject: [PATCH] chore: support config

---
 .gitignore          |  1 +
 config/config.go    | 25 +++++++++++++++++++++++++
 example.config.json |  5 +++++
 main.go             | 24 ++++++++++++++++++++++--
 route/route.go      |  2 +-
 5 files changed, 54 insertions(+), 3 deletions(-)
 create mode 100644 .gitignore
 create mode 100644 config/config.go
 create mode 100644 example.config.json

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..361b2e8
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/bufile
diff --git a/config/config.go b/config/config.go
new file mode 100644
index 0000000..b452b1b
--- /dev/null
+++ b/config/config.go
@@ -0,0 +1,25 @@
+package config
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+)
+
+type Config struct {
+	Modules []string `json:"modules"`
+}
+
+func Parse(path string) (Config, error) {
+	var cfg Config
+	f, err := os.ReadFile(path)
+	if err != nil {
+		return cfg, fmt.Errorf("reading config file: %w", err)
+	}
+
+	err = json.Unmarshal(f, &cfg)
+	if err != nil {
+		return cfg, fmt.Errorf("parsing config file: %w", err)
+	}
+	return cfg, nil
+}
diff --git a/example.config.json b/example.config.json
new file mode 100644
index 0000000..2be9ea4
--- /dev/null
+++ b/example.config.json
@@ -0,0 +1,5 @@
+{
+  "modules": [
+    "buf.build/vic3lord/bufile"
+  ]
+}
diff --git a/main.go b/main.go
index a381036..475e088 100644
--- a/main.go
+++ b/main.go
@@ -2,15 +2,35 @@ package main
 
 import (
 	"context"
+	"flag"
 	"log"
+	"log/slog"
 	"os"
 
+	"github.com/vic3lord/bufile/config"
 	"github.com/vic3lord/bufile/route"
 )
 
+var (
+	configFile = flag.String("config", "bufile.json", "Path to config file")
+)
+
 func main() {
-	err := route.Generate(context.Background(), os.Stdout)
+	flag.Parse()
+	cfg, err := config.Parse(*configFile)
 	if err != nil {
-		log.Fatalf("failed to generate routes: %v", err)
+		log.Fatalf("Failed to parse config: %v", err)
+	}
+
+	ctx := context.Background()
+	for _, mod := range cfg.Modules {
+		err = route.Generate(ctx, mod, os.Stdout)
+		if err != nil {
+			l := slog.With(
+				slog.String("module", mod),
+				slog.String("err", err.Error()),
+			)
+			l.Error("failed to generate routes")
+		}
 	}
 }
diff --git a/route/route.go b/route/route.go
index 7d96ca1..cd9086d 100644
--- a/route/route.go
+++ b/route/route.go
@@ -35,7 +35,7 @@ type Rule struct {
 //go:embed template.yaml
 var routesTemplate string
 
-func Generate(ctx context.Context, w io.Writer) error {
+func Generate(ctx context.Context, mod string, w io.Writer) error {
 	tmpl, err := template.New("routes-template").Parse(routesTemplate)
 	if err != nil {
 		return err