1 files changed, 64 insertions, 0 deletions
diff --git a/src/repl/prompt.rs b/src/repl/prompt.rs
new file mode 100644
index 0000000..4c56626
--- /dev/null
+++ b/src/repl/prompt.rs
@@ -0,0 +1,64 @@
+use crate::config::SharedConfig;
+
+use reedline::{Prompt, PromptHistorySearch, PromptHistorySearchStatus};
+use std::borrow::Cow;
+
+const DEFAULT_MULTILINE_INDICATOR: &str = "::: ";
+
+#[derive(Clone)]
+pub struct ReplPrompt(SharedConfig);
+
+impl ReplPrompt {
+    pub fn new(config: SharedConfig) -> Self {
+        Self(config)
+    }
+}
+
+impl Prompt for ReplPrompt {
+    fn render_prompt_left(&self) -> Cow<str> {
+        let config = self.0.lock();
+        if let Some(role) = config.role.as_ref() {
+            role.name.to_string().into()
+        } else {
+            Cow::Borrowed("")
+        }
+    }
+
+    fn render_prompt_right(&self) -> Cow<str> {
+        let config = self.0.lock();
+        if let Some(conversation) = config.conversation.as_ref() {
+            conversation.reamind_tokens().to_string().into()
+        } else {
+            Cow::Borrowed("")
+        }
+    }
+
+    fn render_prompt_indicator(&self, _prompt_mode: reedline::PromptEditMode) -> Cow<str> {
+        let config = self.0.lock();
+        if config.conversation.is_some() {
+            Cow::Borrowed("＄")
+        } else {
+            Cow::Borrowed("〉")
+        }
+    }
+
+    fn render_prompt_multiline_indicator(&self) -> Cow<str> {
+        Cow::Borrowed(DEFAULT_MULTILINE_INDICATOR)
+    }
+
+    fn render_prompt_history_search_indicator(
+        &self,
+        history_search: PromptHistorySearch,
+    ) -> Cow<str> {
+        let prefix = match history_search.status {
+            PromptHistorySearchStatus::Passing => "",
+            PromptHistorySearchStatus::Failing => "failing ",
+        };
+        // NOTE: magic strings, given there is logic on how these compose I am not sure if it
+        // is worth extracting in to static constant
+        Cow::Owned(format!(
+            "({}reverse-search: {}) ",
+            prefix, history_search.term
+        ))
+    }
+}