feat: persist group business state in tables

scripts/apply_group_business_tables.go

@@ -0,0 +1,59 @@
+//go:build ignore
+
+package main
+
+import (
+	"database/sql"
+	"fmt"
+	"os"
+	"strings"
+
+	_ "github.com/go-sql-driver/mysql"
+)
+
+func main() {
+	dsn := strings.TrimPrefix(os.Getenv("IM_MYSQL_DSN"), "mysql://")
+	if dsn == "" {
+		fatal("IM_MYSQL_DSN is required")
+	}
+	db, err := sql.Open("mysql", dsn)
+	if err != nil {
+		fatal(err)
+	}
+	defer db.Close()
+	if err = db.Ping(); err != nil {
+		fatal(err)
+	}
+
+	raw, err := os.ReadFile("docs/IM-群聊业务表设计.sql")
+	if err != nil {
+		fatal(err)
+	}
+	sqlText := stripSQLLineComments(string(raw))
+	for _, stmt := range strings.Split(sqlText, ";") {
+		stmt = strings.TrimSpace(stmt)
+		if stmt == "" {
+			continue
+		}
+		if _, err = db.Exec(stmt); err != nil {
+			fatal(fmt.Errorf("exec failed: %s: %w", stmt, err))
+		}
+	}
+	fmt.Println("group business tables applied")
+}
+
+func stripSQLLineComments(text string) string {
+	var lines []string
+	for _, line := range strings.Split(text, "\n") {
+		if strings.HasPrefix(strings.TrimSpace(line), "--") {
+			continue
+		}
+		lines = append(lines, line)
+	}
+	return strings.Join(lines, "\n")
+}
+
+func fatal(v any) {
+	fmt.Fprintln(os.Stderr, v)
+	os.Exit(1)
+}