Chore: move helpers to helpfuncs

1 files changed, 405 insertions, 0 deletions

diff --git a/helpfuncs.go b/helpfuncs.go
index 1c4aa2e..f5e64ae 100644
--- a/helpfuncs.go
+++ b/helpfuncs.go
@@ -7,12 +7,15 @@ import (
 	"image"
 	"net/url"
 	"os"
+	"os/exec"
 	"path"
 	"slices"
 	"strings"
 	"unicode"
 
 	"math/rand/v2"
+
+	"github.com/rivo/tview"
 )
 
 func isASCII(s string) bool {
@@ -374,3 +377,405 @@ func deepseekModelValidator() error {
 	}
 	return nil
 }
+
+// == shellmode ==
+
+func toggleShellMode() {
+	shellMode = !shellMode
+	if shellMode {
+		// Update input placeholder to indicate shell mode
+		textArea.SetPlaceholder("SHELL MODE: Enter command and press <Esc> to execute")
+	} else {
+		// Reset to normal mode
+		textArea.SetPlaceholder("input is multiline; press <Enter> to start the next line;\npress <Esc> to send the message. Alt+1 to exit shell mode")
+	}
+	updateStatusLine()
+}
+
+func updateFlexLayout() {
+	if fullscreenMode {
+		// flex already contains only focused widget; do nothing
+		return
+	}
+	flex.Clear()
+	flex.AddItem(textView, 0, 40, false)
+	flex.AddItem(textArea, 0, 10, false)
+	if positionVisible {
+		flex.AddItem(statusLineWidget, 0, 2, false)
+	}
+	// Keep focus on currently focused widget
+	focused := app.GetFocus()
+	if focused == textView {
+		app.SetFocus(textView)
+	} else {
+		app.SetFocus(textArea)
+	}
+}
+
+func executeCommandAndDisplay(cmdText string) {
+	// Parse the command (split by spaces, but handle quoted arguments)
+	cmdParts := parseCommand(cmdText)
+	if len(cmdParts) == 0 {
+		fmt.Fprintf(textView, "\n[red]Error: No command provided[-:-:-]\n")
+		if scrollToEndEnabled {
+			textView.ScrollToEnd()
+		}
+		colorText()
+		return
+	}
+	command := cmdParts[0]
+	args := []string{}
+	if len(cmdParts) > 1 {
+		args = cmdParts[1:]
+	}
+	// Create the command execution
+	cmd := exec.Command(command, args...)
+	// Execute the command and get output
+	output, err := cmd.CombinedOutput()
+	// Add the command being executed to the chat
+	fmt.Fprintf(textView, "\n[yellow]$ %s[-:-:-]\n", cmdText)
+	var outputContent string
+	if err != nil {
+		// Include both output and error
+		errorMsg := "Error: " + err.Error()
+		fmt.Fprintf(textView, "[red]%s[-:-:-]\n", errorMsg)
+		if len(output) > 0 {
+			outputStr := string(output)
+			fmt.Fprintf(textView, "[red]%s[-:-:-]\n", outputStr)
+			outputContent = errorMsg + "\n" + outputStr
+		} else {
+			outputContent = errorMsg
+		}
+	} else {
+		// Only output if successful
+		if len(output) > 0 {
+			outputStr := string(output)
+			fmt.Fprintf(textView, "[green]%s[-:-:-]\n", outputStr)
+			outputContent = outputStr
+		} else {
+			successMsg := "Command executed successfully (no output)"
+			fmt.Fprintf(textView, "[green]%s[-:-:-]\n", successMsg)
+			outputContent = successMsg
+		}
+	}
+	// Combine command and output in a single message for chat history
+	combinedContent := "$ " + cmdText + "\n\n" + outputContent
+	combinedMsg := models.RoleMsg{
+		Role:    cfg.ToolRole,
+		Content: combinedContent,
+	}
+	chatBody.Messages = append(chatBody.Messages, combinedMsg)
+	// Scroll to end and update colors
+	if scrollToEndEnabled {
+		textView.ScrollToEnd()
+	}
+	colorText()
+}
+
+// parseCommand splits command string handling quotes properly
+func parseCommand(cmd string) []string {
+	var args []string
+	var current string
+	var inQuotes bool
+	var quoteChar rune
+	for _, r := range cmd {
+		switch r {
+		case '"', '\'':
+			if inQuotes {
+				if r == quoteChar {
+					inQuotes = false
+				} else {
+					current += string(r)
+				}
+			} else {
+				inQuotes = true
+				quoteChar = r
+			}
+		case ' ', '\t':
+			if inQuotes {
+				current += string(r)
+			} else if current != "" {
+				args = append(args, current)
+				current = ""
+			}
+		default:
+			current += string(r)
+		}
+	}
+	if current != "" {
+		args = append(args, current)
+	}
+	return args
+}
+
+// == search ==
+
+// Global variables for search state
+var searchResults []int
+var searchResultLengths []int // To store the length of each match in the formatted string
+var searchIndex int
+var searchText string
+var originalTextForSearch string
+
+// performSearch searches for the given term in the textView content and highlights matches
+func performSearch(term string) {
+	searchText = term
+	if searchText == "" {
+		searchResults = nil
+		searchResultLengths = nil
+		originalTextForSearch = ""
+		// Re-render text without highlights
+		textView.SetText(chatToText(chatBody.Messages, cfg.ShowSys))
+		colorText()
+		return
+	}
+	// Get formatted text and search directly in it to avoid mapping issues
+	formattedText := textView.GetText(true)
+	originalTextForSearch = formattedText
+	searchTermLower := strings.ToLower(searchText)
+	formattedTextLower := strings.ToLower(formattedText)
+	// Find all occurrences of the search term in the formatted text directly
+	formattedSearchResults := []int{}
+	searchStart := 0
+	for {
+		pos := strings.Index(formattedTextLower[searchStart:], searchTermLower)
+		if pos == -1 {
+			break
+		}
+		absolutePos := searchStart + pos
+		formattedSearchResults = append(formattedSearchResults, absolutePos)
+		searchStart = absolutePos + len(searchText)
+	}
+	if len(formattedSearchResults) == 0 {
+		// No matches found
+		searchResults = nil
+		searchResultLengths = nil
+		notification := "Pattern not found: " + term
+		if err := notifyUser("search", notification); err != nil {
+			logger.Error("failed to send notification", "error", err)
+		}
+		return
+	}
+	// Store the formatted text positions and lengths for accurate highlighting
+	searchResults = formattedSearchResults
+	// Create lengths array - all matches have the same length as the search term
+	searchResultLengths = make([]int, len(formattedSearchResults))
+	for i := range searchResultLengths {
+		searchResultLengths[i] = len(searchText)
+	}
+	searchIndex = 0
+	highlightCurrentMatch()
+}
+
+// highlightCurrentMatch highlights the current search match and scrolls to it
+func highlightCurrentMatch() {
+	if len(searchResults) == 0 || searchIndex >= len(searchResults) {
+		return
+	}
+	// Get the stored formatted text
+	formattedText := originalTextForSearch
+	// For tview to properly support highlighting and scrolling, we need to work with its region system
+	// Instead of just applying highlights, we need to add region tags to the text
+	highlightedText := addRegionTags(formattedText, searchResults, searchResultLengths, searchIndex, searchText)
+	// Update the text view with the text that includes region tags
+	textView.SetText(highlightedText)
+	// Highlight the current region and scroll to it
+	// Need to identify which position in the results array corresponds to the current match
+	// The region ID will be search_<position>_<index>
+	currentRegion := fmt.Sprintf("search_%d_%d", searchResults[searchIndex], searchIndex)
+	textView.Highlight(currentRegion).ScrollToHighlight()
+	// Send notification about which match we're at
+	notification := fmt.Sprintf("Match %d of %d", searchIndex+1, len(searchResults))
+	if err := notifyUser("search", notification); err != nil {
+		logger.Error("failed to send notification", "error", err)
+	}
+}
+
+// showSearchBar shows the search input field as an overlay
+func showSearchBar() {
+	// Create a temporary flex to combine search and main content
+	updatedFlex := tview.NewFlex().SetDirection(tview.FlexRow).
+		AddItem(searchField, 3, 0, true). // Search field at top
+		AddItem(flex, 0, 1, false)        // Main flex layout below
+	// Add the search overlay as a page
+	pages.AddPage(searchPageName, updatedFlex, true, true)
+	app.SetFocus(searchField)
+}
+
+// hideSearchBar hides the search input field
+func hideSearchBar() {
+	pages.RemovePage(searchPageName)
+	// Return focus to the text view
+	app.SetFocus(textView)
+	// Clear the search field
+	searchField.SetText("")
+}
+
+// Global variables for index overlay functionality
+var indexPageName = "indexOverlay"
+
+// showIndexBar shows the index input field as an overlay at the top
+func showIndexBar() {
+	// Create a temporary flex to combine index input and main content
+	updatedFlex := tview.NewFlex().SetDirection(tview.FlexRow).
+		AddItem(indexPickWindow, 3, 0, true). // Index field at top
+		AddItem(flex, 0, 1, false)            // Main flex layout below
+
+	// Add the index overlay as a page
+	pages.AddPage(indexPageName, updatedFlex, true, true)
+	app.SetFocus(indexPickWindow)
+}
+
+// hideIndexBar hides the index input field
+func hideIndexBar() {
+	pages.RemovePage(indexPageName)
+	// Return focus to the text view
+	app.SetFocus(textView)
+	// Clear the index field
+	indexPickWindow.SetText("")
+}
+
+// addRegionTags adds region tags to search matches in the text for tview highlighting
+func addRegionTags(text string, positions []int, lengths []int, currentIdx int, searchTerm string) string {
+	if len(positions) == 0 {
+		return text
+	}
+	var result strings.Builder
+	lastEnd := 0
+	for i, pos := range positions {
+		endPos := pos + lengths[i]
+		// Add text before this match
+		if pos > lastEnd {
+			result.WriteString(text[lastEnd:pos])
+		}
+		// The matched text, which may contain its own formatting tags
+		actualText := text[pos:endPos]
+		// Add region tag and highlighting for this match
+		// Use a unique region id that includes the match index to avoid conflicts
+		regionId := fmt.Sprintf("search_%d_%d", pos, i) // position + index to ensure uniqueness
+		var highlightStart, highlightEnd string
+		if i == currentIdx {
+			// Current match - use different highlighting
+			highlightStart = fmt.Sprintf(`["%s"][yellow:blue:b]`, regionId) // Current match with region and special highlight
+			highlightEnd = `[-:-:-][""]`                                    // Reset formatting and close region
+		} else {
+			// Other matches - use regular highlighting
+			highlightStart = fmt.Sprintf(`["%s"][gold:red:u]`, regionId) // Other matches with region and highlight
+			highlightEnd = `[-:-:-][""]`                                 // Reset formatting and close region
+		}
+		result.WriteString(highlightStart)
+		result.WriteString(actualText)
+		result.WriteString(highlightEnd)
+		lastEnd = endPos
+	}
+	// Add the rest of the text after the last processed match
+	if lastEnd < len(text) {
+		result.WriteString(text[lastEnd:])
+	}
+	return result.String()
+}
+
+// searchNext finds the next occurrence of the search term
+func searchNext() {
+	if len(searchResults) == 0 {
+		if err := notifyUser("search", "No search results to navigate"); err != nil {
+			logger.Error("failed to send notification", "error", err)
+		}
+		return
+	}
+	searchIndex = (searchIndex + 1) % len(searchResults)
+	highlightCurrentMatch()
+}
+
+// searchPrev finds the previous occurrence of the search term
+func searchPrev() {
+	if len(searchResults) == 0 {
+		if err := notifyUser("search", "No search results to navigate"); err != nil {
+			logger.Error("failed to send notification", "error", err)
+		}
+		return
+	}
+	if searchIndex == 0 {
+		searchIndex = len(searchResults) - 1
+	} else {
+		searchIndex--
+	}
+	highlightCurrentMatch()
+}
+
+// == tab completion ==
+
+func scanFiles(dir, filter string) []string {
+	var files []string
+	entries, err := os.ReadDir(dir)
+	if err != nil {
+		return files
+	}
+	for _, entry := range entries {
+		name := entry.Name()
+		if strings.HasPrefix(name, ".") {
+			continue
+		}
+		if filter == "" || strings.HasPrefix(strings.ToLower(name), strings.ToLower(filter)) {
+			if entry.IsDir() {
+				files = append(files, name+"/")
+			} else {
+				files = append(files, name)
+			}
+		}
+	}
+	return files
+}
+
+func showFileCompletion(filter string) {
+	baseDir := cfg.CodingDir
+	if baseDir == "" {
+		baseDir = "."
+	}
+	complMatches = scanFiles(baseDir, filter)
+	go func() {
+		app.QueueUpdateDraw(func() {
+			if len(complMatches) == 0 {
+				hideCompletion() // Make sure hideCompletion also uses QueueUpdate if it modifies UI
+				return
+			}
+			// Limit the number of complMatches
+			if len(complMatches) > 10 {
+				complMatches = complMatches[:10]
+			}
+			// Update the popup's content
+			complPopup.Clear()
+			for _, f := range complMatches {
+				complPopup.AddItem(f, "", 0, nil)
+			}
+			// Update state and UI
+			complPopup.SetCurrentItem(0)
+			complActive = true
+			// Show the popup and set focus
+			pages.AddPage("complPopup", complPopup, true, true)
+			app.SetFocus(complPopup)
+			// No need to call app.Draw() here, QueueUpdateDraw does it automatically
+		})
+	}()
+}
+
+func insertCompletion() {
+	if complIndex >= 0 && complIndex < len(complMatches) {
+		match := complMatches[complIndex]
+		currentText := textArea.GetText()
+		atIdx := strings.LastIndex(currentText, "@")
+		if atIdx >= 0 {
+			before := currentText[:atIdx]
+			textArea.SetText(before+match, true)
+		}
+	}
+	hideCompletion()
+}
+
+func hideCompletion() {
+	complActive = false
+	complMatches = nil
+	pages.RemovePage("complPopup")
+	app.SetFocus(textArea)
+	app.Draw()
+}