Add binary files support (#503)

internal/render/csv.go

@@ -0,0 +1,44 @@
+package render
+
+import (
+	"encoding/csv"
+	"fmt"
+	"strings"
+
+	"github.com/thomiceli/opengist/internal/git"
+)
+
+type CSVFile struct {
+	*git.File
+	Type   string     `json:"type"`
+	Header []string   `json:"-"`
+	Rows   [][]string `json:"-"`
+}
+
+func (r CSVFile) getFile() *git.File {
+	return r.File
+}
+
+func renderCsvFile(file *git.File) (*CSVFile, error) {
+	reader := csv.NewReader(strings.NewReader(file.Content))
+	records, err := reader.ReadAll()
+	if err != nil {
+		return nil, err
+	}
+
+	header := records[0]
+	numColumns := len(header)
+
+	for i := 1; i < len(records); i++ {
+		if len(records[i]) != numColumns {
+			return nil, fmt.Errorf("CSV file has invalid row at index %d", i)
+		}
+	}
+
+	return &CSVFile{
+		File:   file,
+		Type:   "CSV",
+		Header: header,
+		Rows:   records[1:],
+	}, nil
+}