ui: split out the app struct into a new ui mod

src/scene/conversation.rs

@@ -1,4 +1,5 @@
 use async_openai::types::chat::{ChatCompletionRequestAssistantMessage, ChatCompletionRequestAssistantMessageContent, ChatCompletionRequestMessage, ChatCompletionRequestSystemMessage, ChatCompletionRequestSystemMessageContent, ChatCompletionRequestUserMessage, ChatCompletionRequestUserMessageContent};
+use ratatui::style::{self, Style};
 use serde::{Deserialize, Serialize};
 
 #[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
@@ -11,6 +12,47 @@ pub enum ConversationEntry {
     SystemMessage(String)
 }
 
+impl ConversationEntry {
+    pub fn prefix(&self) -> Option<&str> {
+        match self {
+            ConversationEntry::Eva(_) => Some("Eva: "),
+            ConversationEntry::User(_) => Some("Argee: "),
+            ConversationEntry::ShipComputer(_) => Some("Ship Computer: "),
+            _ => None,
+        }
+    }
+
+    pub fn prefix_style(&self) -> Style {
+        match self {
+            ConversationEntry::Eva(_) => Style::new().fg(style::Color::Cyan),
+            ConversationEntry::User(_) => Style::new().fg(style::Color::Magenta),
+            ConversationEntry::ShipComputer(_) => Style::new().fg(style::Color::Green),
+            ConversationEntry::StageDirection(_) => Style::new().fg(style::Color::Yellow),
+            ConversationEntry::SystemMessage(_) => Style::new().fg(style::Color::DarkGray),
+        }
+    }
+
+    pub fn text_style(&self) -> Style {
+        match self {
+            ConversationEntry::StageDirection(_) => Style::new().fg(style::Color::Yellow),
+            ConversationEntry::SystemMessage(_) => Style::new().fg(style::Color::DarkGray),
+            _ => Style::new()
+        }
+    }
+}
+
+impl ToString for ConversationEntry {
+    fn to_string(&self) -> String {
+        match self {
+            ConversationEntry::Eva(text) => text,
+            ConversationEntry::ShipComputer(text) => text,
+            ConversationEntry::StageDirection(text) => text,
+            ConversationEntry::SystemMessage(text) => text,
+            ConversationEntry::User(text) => text
+        }.clone()
+    }
+}
+
 impl TryInto<ChatCompletionRequestMessage> for ConversationEntry {
     fn try_into(self) -> Result<ChatCompletionRequestMessage, Self::Error> {
         match self {