1 files changed, 120 insertions, 0 deletions
diff --git a/go-src/windows.go b/go-src/windows.go
index 50bc5d5..c8e7234 100644
--- a/go-src/windows.go
+++ b/go-src/windows.go
@@ -221,6 +221,126 @@ func chatWindow(values ...string) {
 	lastLine = -2 // Practically stops execution of the paginated subwindow routine
 }
 
+func directMessagesWindow(values ...string) {
+	csi.ClearScreen()
+
+	initPaginatedValues(0, &values)
+
+	ui.NormalBox(true, chatNavTitle, accountNavTitle, logoutNavTitle)
+
+	allDirectMessageChats := getAllDirectMessageChats()
+	ui.EmptyLines(pageSize + 3) // empty line + message lines + page number line + empty line
+
+	customLinesBelow := utils.If(values[1] == showHelp).Int(3, 2)
+
+	lastLine := -1
+	go routinePaginatedSubwindow(&allDirectMessageChats,
+		func(s *[]string) { *s = (getAllDirectMessageChats()) },
+		&lastLine,
+		len(values[0]),
+		customLinesBelow,
+		true,
+	)
+
+	if values[1] == showHelp {
+		ui.TextField(directMessagesWindowHelpMsg)
+	}
+
+	input := ui.InputField(chatsSpec)
+
+	nextWindow := handleInputActions(input, true,
+		inputAction{"H", directMessagesWindow, []string{values[0], showHelp}},
+	)
+
+	if nextWindow == nil {
+		// If user input is number, navigate to chat of given number, else show error
+		if chatI, err := strconv.Atoi(input); chatI >= 0 && chatI <= len(allDirectMessageChats) && err == nil {
+			defer directMessageWindow(strings.Trim(strings.Split(allDirectMessageChats[utils.MaxInt(len(allDirectMessageChats)-pageSize*len(values[0]), 0)+chatI-1], " (")[1], ")"))
+		} else if input == ">" {
+			// If possible, increment to the next page (adds a dot to the end of the string)
+			if len(values[0]) < totalPages(len(allDirectMessageChats)) {
+				values[0] += "."
+			}
+			defer directMessagesWindow(values...)
+		} else if input == "<" {
+			// If possible, decrement to the previous page (removes a dot from the string)
+			if len(values[0]) > 1 {
+				utils.StrShortenRight(&values[0], 1)
+			}
+			defer directMessagesWindow(values...)
+		} else if usernameExists(input) {
+			defer directMessageWindow(input)
+		} else {
+			defer showError(invalidCommand, chatsWindow)
+		}
+	} else {
+		defer nextWindow()
+	}
+	lastLine = -2
+
+}
+
+func directMessageWindow(values ...string) {
+	csi.ClearScreen()
+
+	// We determine page number by length of a string
+	// This method should be faster than having to cast to int all the time
+	initPaginatedValues(1, &values)
+
+	currDirectMessagesChat := getDirectMessageChat(values[0])
+
+	ui.NormalBox(true, chatNavTitle, directMessagesNavTitle, accountNavTitle, logoutNavTitle)
+	ui.TextField(currDirectMessagesChat.Author2.Name + " (" + currDirectMessagesChat.Author2.Username + ")")
+
+	ui.EmptyLines(pageSize + 3) // empty line + messages lines + page number line + empty line
+
+	customLinesBelow := utils.If(values[2] == showHelp).Int(3, 2)
+
+	lastLine := -1
+	go routinePaginatedSubwindow(&currDirectMessagesChat.Messages,
+		func(s *[]string) { *s = getDirectMessageChat(values[0]).Messages },
+		&lastLine,
+		len(values[1]),
+		customLinesBelow,
+		false,
+	)
+
+	if values[2] == showHelp {
+		ui.TextField(directMessageWindowHelpMsg)
+		values[2] = ""
+	}
+
+	input := ui.InputField(chatWindowSpec)
+
+	nextWindow := handleInputActions(input, true,
+		inputAction{"H", directMessageWindow, []string{values[0], values[1], showHelp}},
+	)
+
+	if nextWindow == nil {
+		switch input {
+		case ">":
+			// If possible, increment to the next page (adds a dot to the end of the string)
+			if len(values[1]) < totalPages(len(currDirectMessagesChat.Messages)) {
+				values[1] += "."
+			}
+		case "<":
+			// If possible, decrement to the previous page (removes a dot from the string)
+			if len(values[1]) > 1 {
+				utils.StrShortenRight(&values[1], 1)
+			}
+		default: // Send a message
+			values[1] = "." // Make sure to be at the first page, when sending a message
+			// Since "C" is a command, to just enter the letter C you'll need to input "\C"
+			currDirectMessagesChat.addMessage(strings.TrimPrefix(input, "\\"), loggedInUser.Username)
+		}
+
+		defer directMessageWindow(values...)
+	} else {
+		defer nextWindow()
+	}
+	lastLine = -2 // Practically stops execution of the paginated subwindow routine
+}
+
 func accountWindow(values ...string) {
 	csi.ClearScreen()