package repo

import (
	"log"
	"strings"
)

// ApplySchema 按语句拆开执行；重复索引等可忽略错误不阻断启动。
func (r *JobRepo) ApplySchema(schemaSQL string) {
	for _, stmt := range splitSQL(schemaSQL) {
		if _, err := r.DB.Exec(stmt); err != nil {
			msg := err.Error()
			// 1061 Duplicate key name / 已存在表
			if strings.Contains(msg, "1061") || strings.Contains(msg, "1050") ||
				strings.Contains(msg, "already exists") {
				continue
			}
			log.Printf("schema 语句失败（已跳过）: %v | sql=%.80s…", err, stmt)
		}
	}
}

func splitSQL(s string) []string {
	var out []string
	var b strings.Builder
	lines := strings.Split(s, "\n")
	for _, line := range lines {
		trim := strings.TrimSpace(line)
		if trim == "" || strings.HasPrefix(trim, "--") {
			continue
		}
		b.WriteString(line)
		b.WriteByte('\n')
		if strings.HasSuffix(trim, ";") {
			stmt := strings.TrimSpace(b.String())
			stmt = strings.TrimSuffix(stmt, ";")
			if stmt != "" {
				out = append(out, stmt)
			}
			b.Reset()
		}
	}
	if rest := strings.TrimSpace(b.String()); rest != "" {
		out = append(out, rest)
	}
	return out
}