package reporters
import (
"encoding/json"
"fmt"
"io"
"github.com/yoheimuta/protolint/linter/report"
)
// MCPReporter prints failures in MCP friendly JSON format.
type MCPReporter struct{}
// Report writes failures to w in MCP friendly format.
func (r MCPReporter) Report(w io.Writer, fs []report.Failure) error {
// Group failures by file
fileFailures := make(map[string][]map[string]interface{})
for _, failure := range fs {
filePath := failure.Pos().Filename
failureInfo := map[string]interface{}{
"rule_id": failure.RuleID(),
"message": failure.Message(),
"line": failure.Pos().Line,
"column": failure.Pos().Column,
"severity": failure.Severity(),
}
fileFailures[filePath] = append(fileFailures[filePath], failureInfo)
}
// Convert to array of results
var fileResults []map[string]interface{} = []map[string]interface{}{}
for filePath, failures := range fileFailures {
fileResults = append(fileResults, map[string]interface{}{
"file_path": filePath,
"failures": failures,
})
}
result := map[string]interface{}{
"results": fileResults,
}
bs, err := json.MarshalIndent(result, "", " ")
if err != nil {
return err
}
_, err = fmt.Fprintln(w, string(bs))
return err
}
