Optimization/func

assets/prompts/system_prompt.txt

@@ -18,6 +18,10 @@ Metadata Context:
 - Dependency Changes: {{.DependencyAlert}}
 - Added/Deleted Line Ratio: {{printf "%.2f" .DiffSummary.Ratio}}
 
+Recent Commit History (for style reference):
+{{range .RecentCommits}}- {{.}}
+{{end}}
+
 Summarized Git Diff:
 {{.DiffContent}}
 

internal/ai/ai_test.go

@@ -29,6 +29,7 @@ func TestRenderPrompt(t *testing.T) {
 		"internal/auth/login.go",
 		"[func] Login",
 		"Added/Deleted Line Ratio: 0.83",
+		"Recent Commit History",
 	}
 
 	for _, part := range expectedParts {

internal/ai/prompt.go

@@ -8,6 +8,7 @@ import (
 
 	"github.com/andev0x/gitmit/assets"
 	"github.com/andev0x/gitmit/internal/analyzer"
+	"github.com/andev0x/gitmit/internal/history"
 )
 
 // PromptContext represents the data structure passed to the prompt template
@@ -20,6 +21,7 @@ type PromptContext struct {
 	DependencyAlert string
 	DiffSummary     DiffSummary
 	DiffContent     string
+	RecentCommits   []string
 }
 
 // DiffSummary contains ratio of changes
@@ -61,6 +63,9 @@ func RenderPrompt(msg *analyzer.CommitMessage, projectType, branchName string) (
 		ratio = float64(msg.TotalAdded) / float64(total)
 	}
 
+	// Fetch recent commits for style reference
+	recentCommits, _ := history.GetRecentCommits(5)
+
 	ctx := PromptContext{
 		ProjectType:     projectType,
 		CurrentBranch:   branchName,
@@ -71,7 +76,8 @@ func RenderPrompt(msg *analyzer.CommitMessage, projectType, branchName string) (
 		DiffSummary: DiffSummary{
 			Ratio: ratio,
 		},
-		DiffContent: msg.FullDiff,
+		DiffContent:   msg.FullDiff,
+		RecentCommits: recentCommits,
 	}
 
 	var buf bytes.Buffer

internal/analyzer/analyzer.go

@@ -1290,11 +1290,16 @@ func (a *Analyzer) summarizeDiff(diff string) string {
 	var summary strings.Builder
 	scanner := bufio.NewScanner(strings.NewReader(diff))
 	lineCount := 0
-	maxLines := 20 // Limit lines per file to avoid context bloat
+	maxLines := 25 // Limit lines per file to avoid context bloat
 
 	for scanner.Scan() {
 		line := scanner.Text()
 		// Only include added/removed lines and hunk headers
+		// Skip binary files or extremely long lines
+		if len(line) > 500 {
+			continue
+		}
+
 		if strings.HasPrefix(line, "+") || strings.HasPrefix(line, "-") || strings.HasPrefix(line, "@@") {
 			if strings.HasPrefix(line, "+++") || strings.HasPrefix(line, "---") {
 				continue
@@ -1304,7 +1309,7 @@ func (a *Analyzer) summarizeDiff(diff string) string {
 			lineCount++
 		}
 		if lineCount >= maxLines {
-			summary.WriteString("... (truncated)\n")
+			summary.WriteString("... (rest of file truncated)\n")
 			break
 		}
 	}

internal/formatter/formatter.go

@@ -2,6 +2,7 @@ package formatter
 
 import (
 	"fmt"
+	"regexp"
 	"strings"
 )
 
@@ -30,7 +31,8 @@ func (f *Formatter) FormatMessage(msg string, isMajor bool) string {
 	subject := strings.TrimSpace(parts[0])
 	body := ""
 	if len(parts) > 1 {
-		body = strings.TrimSpace(parts[1])
+		body = strings.TrimLeft(parts[1], "\n\r")
+		body = strings.TrimRight(body, "\n\r\t ")
 	}
 
 	// Remove redundant phrases from subject
@@ -49,6 +51,7 @@ func (f *Formatter) FormatMessage(msg string, isMajor bool) string {
 		subjectParts := strings.SplitN(wrapped, "\n", 2)
 		subject = subjectParts[0]
 		if len(subjectParts) > 1 {
+			// Subject overflow becomes the start of the body
 			if body != "" {
 				body = subjectParts[1] + "\n\n" + body
 			} else {
@@ -68,7 +71,7 @@ func (f *Formatter) FormatMessage(msg string, isMajor bool) string {
 	return subject
 }
 
-// wrapString wraps a string at the specified limit, preserving paragraphs
+// wrapString wraps a string at the specified limit, preserving paragraphs and structures
 func (f *Formatter) wrapString(s string, limit int) string {
 	if limit <= 0 {
 		return s
@@ -82,27 +85,167 @@ func (f *Formatter) wrapString(s string, limit int) string {
 			result.WriteString("\n\n")
 		}
 
-		words := strings.Fields(p)
-		if len(words) == 0 {
-			continue
-		}
+		lines := strings.Split(p, "\n")
+		var currentParagraph strings.Builder
 
-		currentLineLength := 0
-		for j, word := range words {
-			if j > 0 {
-				if currentLineLength+1+len(word) > limit {
+		for _, line := range lines {
+			if f.isStructural(line) {
+				// Flush any pending paragraph text
+				if currentParagraph.Len() > 0 {
+					result.WriteString(f.reflow(currentParagraph.String(), limit))
 					result.WriteString("\n")
-					currentLineLength = 0
-				} else {
-					result.WriteString(" ")
-					currentLineLength++
+					currentParagraph.Reset()
+				}
+				// Wrap the structural line itself (preserving its prefix if possible)
+				result.WriteString(f.wrapLine(line, limit))
+				result.WriteString("\n")
+			} else {
+				trimmed := strings.TrimSpace(line)
+				if trimmed == "" {
+					continue
+				}
+				if currentParagraph.Len() > 0 {
+					currentParagraph.WriteString(" ")
 				}
+				currentParagraph.WriteString(trimmed)
 			}
+		}
+
+		if currentParagraph.Len() > 0 {
+			result.WriteString(f.reflow(currentParagraph.String(), limit))
+		}
 
-			result.WriteString(word)
-			currentLineLength += len(word)
+		// Cleanup trailing newline from structural lines at the end of a paragraph
+		resStr := result.String()
+		if strings.HasSuffix(resStr, "\n") {
+			result.Reset()
+			result.WriteString(strings.TrimSuffix(resStr, "\n"))
 		}
 	}
 
 	return result.String()
 }
+
+// isStructural identifies lines that should not be reflowed into paragraphs
+func (f *Formatter) isStructural(line string) bool {
+	trimmed := strings.TrimSpace(line)
+	if trimmed == "" {
+		return false
+	}
+
+	// List markers at the start of the trimmed line
+	markers := []string{"- ", "* ", "+ "}
+	for _, m := range markers {
+		if strings.HasPrefix(trimmed, m) {
+			return true
+		}
+	}
+
+	// Numeric list markers (e.g., "1. ")
+	numericRegex := regexp.MustCompile(`^\d+\.\s`)
+	if numericRegex.MatchString(trimmed) {
+		return true
+	}
+
+	// Significant indentation (at least 2 spaces or a tab)
+	if strings.HasPrefix(line, "  ") || strings.HasPrefix(line, "\t") {
+		return true
+	}
+
+	return false
+}
+
+// reflow joins words and wraps them at the limit
+func (f *Formatter) reflow(s string, limit int) string {
+	words := strings.Fields(s)
+	if len(words) == 0 {
+		return ""
+	}
+
+	var res strings.Builder
+	currLen := 0
+	for i, w := range words {
+		if i > 0 {
+			if currLen+1+len(w) > limit {
+				res.WriteString("\n")
+				currLen = 0
+			} else {
+				res.WriteString(" ")
+				currLen++
+			}
+		}
+		res.WriteString(w)
+		currLen += len(w)
+	}
+	return res.String()
+}
+
+// wrapLine wraps a single structural line, attempting to preserve indentation
+func (f *Formatter) wrapLine(line string, limit int) string {
+	if len(line) <= limit {
+		return line
+	}
+
+	// Find indentation and prefix
+	indent := ""
+	for _, char := range line {
+		if char == ' ' || char == '\t' {
+			indent += string(char)
+		} else {
+			break
+		}
+	}
+
+	// Also check for list markers
+	content := line[len(indent):]
+	prefix := ""
+	markers := []string{"- ", "* ", "+ "}
+	for _, m := range markers {
+		if strings.HasPrefix(content, m) {
+			prefix = m
+			content = content[len(m):]
+			break
+		}
+	}
+
+	// Handle numeric markers
+	numericRegex := regexp.MustCompile(`^\d+\.\s`)
+	if loc := numericRegex.FindStringIndex(content); loc != nil && loc[0] == 0 {
+		prefix = content[loc[0]:loc[1]]
+		content = content[loc[1]:]
+	}
+
+	words := strings.Fields(content)
+	if len(words) == 0 {
+		return line
+	}
+
+	var res strings.Builder
+	res.WriteString(indent)
+	res.WriteString(prefix)
+	currLen := len(indent) + len(prefix)
+
+	for i, w := range words {
+		if i > 0 {
+			if currLen+1+len(w) > limit {
+				res.WriteString("\n")
+				res.WriteString(indent)
+				// Extra indentation for wrapped list items
+				if prefix != "" {
+					res.WriteString("  ")
+				}
+				currLen = len(indent)
+				if prefix != "" {
+					currLen += 2
+				}
+			} else {
+				res.WriteString(" ")
+				currLen++
+			}
+		}
+		res.WriteString(w)
+		currLen += len(w)
+	}
+
+	return res.String()
+}

internal/formatter/formatter_test.go

@@ -40,6 +40,34 @@ func TestFormatMessage(t *testing.T) {
 			maxBody:    10,
 			expected:   "feat: add\n\nfeature\n\nThis is a\nbody\nmessage\nthat is\nvery long.",
 		},
+		{
+			name:       "preserve list structure",
+			msg:        "feat: add feature\n\n- Item 1\n- Item 2 which is quite long",
+			maxSubject: 50,
+			maxBody:    15,
+			expected:   "feat: add feature\n\n- Item 1\n- Item 2 which\n  is quite long",
+		},
+		{
+			name:       "preserve indentation",
+			msg:        "feat: add feature\n\n    Indented text that should not be joined",
+			maxSubject: 50,
+			maxBody:    20,
+			expected:   "feat: add feature\n\n    Indented text\n    that should not\n    be joined",
+		},
+		{
+			name:       "multi-paragraph reflow",
+			msg:        "feat: add feature\n\nParagraph 1 line 1\nline 2\n\nParagraph 2",
+			maxSubject: 50,
+			maxBody:    50,
+			expected:   "feat: add feature\n\nParagraph 1 line 1 line 2\n\nParagraph 2",
+		},
+		{
+			name:       "subject overflow to body with blank line",
+			msg:        "feat: this is a very long subject line that will overflow",
+			maxSubject: 20,
+			maxBody:    72,
+			expected:   "feat: this is a very\n\nlong subject line that will overflow",
+		},
 		{
 			name:       "redundant phrases",
 			msg:        "feat feat: add add new feature",