refactor: extract json output formatting to utils.PrintJSON and add colorized json output with new dns tld command

3 files changed, 175 insertions, 1 deletions

diff --git a/internal/client/dns.go b/internal/client/dns.go
new file mode 100644
index 0000000..08449e0
--- /dev/null
+++ b/internal/client/dns.go
@@ -0,0 +1,51 @@
+package client
+
+import (
+	"bufio"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"net/url"
+
+	"git.db.org.ai/dborg/internal/models"
+)
+
+func (c *Client) CheckDNSTLDStream(params *models.DNSTLDParams, callback func(result json.RawMessage) error) error {
+	term := url.PathEscape(params.Term)
+	fullURL := c.config.BaseURL + "/dns/tld/" + term
+
+	req, err := http.NewRequest(http.MethodGet, fullURL, nil)
+	if err != nil {
+		return fmt.Errorf("failed to create request: %w", err)
+	}
+
+	req.Header.Set("User-Agent", c.config.UserAgent)
+
+	resp, err := c.httpClient.Do(req)
+	if err != nil {
+		return fmt.Errorf("request failed: %w", err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		return fmt.Errorf("API request failed with status %d", resp.StatusCode)
+	}
+
+	scanner := bufio.NewScanner(resp.Body)
+	for scanner.Scan() {
+		line := scanner.Bytes()
+		if len(line) == 0 {
+			continue
+		}
+
+		if err := callback(json.RawMessage(line)); err != nil {
+			return fmt.Errorf("callback failed: %w", err)
+		}
+	}
+
+	if err := scanner.Err(); err != nil {
+		return fmt.Errorf("failed to read response: %w", err)
+	}
+
+	return nil
+}
diff --git a/internal/models/dns.go b/internal/models/dns.go
new file mode 100644
index 0000000..b08d8ba
--- /dev/null
+++ b/internal/models/dns.go
@@ -0,0 +1,12 @@
+package models
+
+type DNSTLDParams struct {
+	Term string
+}
+
+type DomainResult struct {
+	Domain string   `json:"domain"`
+	Status string   `json:"status"`
+	Title  string   `json:"title,omitempty"`
+	Tech   []string `json:"tech,omitempty"`
+}
diff --git a/internal/utils/output.go b/internal/utils/output.go
index 3f2347c..e8e97bc 100644
--- a/internal/utils/output.go
+++ b/internal/utils/output.go
@@ -1,18 +1,129 @@
 package utils
 
 import (
+	"bytes"
 	"encoding/json"
 	"fmt"
 	"os"
 	"text/tabwriter"
 )
 
+const (
+	colorReset  = "\033[0m"
+	colorKey    = "\033[36m"
+	colorString = "\033[32m"
+	colorNumber = "\033[33m"
+	colorBool   = "\033[35m"
+	colorNull   = "\033[90m"
+	colorBrace  = "\033[37m"
+)
+
+func colorizeJSON(data []byte) string {
+	if !isTerminal() {
+		return string(data)
+	}
+
+	var result bytes.Buffer
+	var inString bool
+	var isKey bool
+	var depth int
+
+	for i := 0; i < len(data); i++ {
+		c := data[i]
+
+		switch c {
+		case '"':
+			if i > 0 && data[i-1] != '\\' {
+				inString = !inString
+				if inString {
+					if i > 0 && (data[i-1] == '{' || data[i-1] == ',' || data[i-1] == '[' || data[i-1] == '\n' || data[i-1] == ' ') {
+						isKey = true
+						result.WriteString(colorKey)
+					} else {
+						result.WriteString(colorString)
+					}
+				} else {
+					result.WriteByte(c)
+					result.WriteString(colorReset)
+					if isKey && i+1 < len(data) && data[i+1] == ':' {
+						isKey = false
+					}
+					continue
+				}
+			}
+			result.WriteByte(c)
+
+		case '{', '}', '[', ']':
+			if !inString {
+				result.WriteString(colorBrace)
+				result.WriteByte(c)
+				result.WriteString(colorReset)
+				if c == '{' || c == '[' {
+					depth++
+				} else {
+					depth--
+				}
+			} else {
+				result.WriteByte(c)
+			}
+
+		case 't', 'f':
+			if !inString && i+3 < len(data) {
+				word := string(data[i:min(i+5, len(data))])
+				if word[:4] == "true" || word[:5] == "false" {
+					result.WriteString(colorBool)
+					if word[:4] == "true" {
+						result.WriteString("true")
+						i += 3
+					} else {
+						result.WriteString("false")
+						i += 4
+					}
+					result.WriteString(colorReset)
+				} else {
+					result.WriteByte(c)
+				}
+			} else {
+				result.WriteByte(c)
+			}
+
+		case 'n':
+			if !inString && i+3 < len(data) && string(data[i:i+4]) == "null" {
+				result.WriteString(colorNull)
+				result.WriteString("null")
+				result.WriteString(colorReset)
+				i += 3
+			} else {
+				result.WriteByte(c)
+			}
+
+		case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '-':
+			if !inString {
+				result.WriteString(colorNumber)
+				for i < len(data) && (data[i] >= '0' && data[i] <= '9' || data[i] == '.' || data[i] == '-' || data[i] == 'e' || data[i] == 'E' || data[i] == '+') {
+					result.WriteByte(data[i])
+					i++
+				}
+				i--
+				result.WriteString(colorReset)
+			} else {
+				result.WriteByte(c)
+			}
+
+		default:
+			result.WriteByte(c)
+		}
+	}
+
+	return result.String()
+}
+
 func PrintJSON(data any) error {
 	output, err := json.MarshalIndent(data, "", "  ")
 	if err != nil {
 		return fmt.Errorf("failed to format JSON: %w", err)
 	}
-	fmt.Println(string(output))
+	fmt.Println(colorizeJSON(output))
 	return nil
 }