feat: add `.info role` and `.info session` (#183)

2 files changed, 53 insertions, 20 deletions

diff --git a/src/config/mod.rs b/src/config/mod.rs
index e6d9238..9f4a11a 100644
--- a/src/config/mod.rs
+++ b/src/config/mod.rs
@@ -148,12 +148,16 @@ impl Config {
         Ok(config)
     }
 
-    pub fn get_role(&self, name: &str) -> Option<Role> {
-        self.roles.iter().find(|v| v.match_name(name)).map(|v| {
-            let mut role = v.clone();
-            role.complete_prompt_args(name);
-            role
-        })
+    pub fn retrieve_role(&self, name: &str) -> Result<Role> {
+        self.roles
+            .iter()
+            .find(|v| v.match_name(name))
+            .map(|v| {
+                let mut role = v.clone();
+                role.complete_prompt_args(name);
+                role
+            })
+            .ok_or_else(|| anyhow!("Unknown role `{name}`"))
     }
 
     pub fn config_dir() -> Result<PathBuf> {
@@ -235,20 +239,14 @@ impl Config {
         Ok(path)
     }
 
-    pub fn set_role(&mut self, name: &str) -> Result<String> {
-        match self.get_role(name) {
-            Some(role) => {
-                if let Some(session) = self.session.as_mut() {
-                    session.update_role(Some(role.clone()))?;
-                }
-                let output = serde_yaml::to_string(&role)
-                    .unwrap_or_else(|_| "Unable to echo role details".into());
-                self.temperature = role.temperature;
-                self.role = Some(role);
-                Ok(output)
-            }
-            None => bail!("Unknown role `{name}`"),
+    pub fn set_role(&mut self, name: &str) -> Result<()> {
+        let role = self.retrieve_role(name)?;
+        if let Some(session) = self.session.as_mut() {
+            session.update_role(Some(role.clone()))?;
         }
+        self.temperature = role.temperature;
+        self.role = Some(role);
+        Ok(())
     }
 
     pub fn clear_role(&mut self) -> Result<()> {
diff --git a/src/config/session.rs b/src/config/session.rs
index 75b863f..4cc172d 100644
--- a/src/config/session.rs
+++ b/src/config/session.rs
@@ -1,6 +1,8 @@
 use super::message::{num_tokens_from_messages, Message, MessageRole};
 use super::role::Role;
 
+use crate::render::MarkdownRender;
+
 use anyhow::{bail, Context, Result};
 use serde::{Deserialize, Serialize};
 use std::fs::{self, read_to_string};
@@ -52,13 +54,46 @@ impl Session {
         Ok(session)
     }
 
-    pub fn info(&self) -> Result<String> {
+    pub fn export(&self) -> Result<String> {
         self.guard_save()?;
         let output = serde_yaml::to_string(&self)
             .with_context(|| format!("Unable to show info about session {}", &self.name))?;
         Ok(output)
     }
 
+    pub fn render(&self, render: &mut MarkdownRender) -> Result<String> {
+        let temperature = self
+            .temperature
+            .map_or_else(|| String::from("-"), |v| v.to_string());
+        let items = vec![
+            ("path", self.path.clone().unwrap_or_else(|| "-".into())),
+            ("model", self.model.clone()),
+            ("tokens", self.tokens.to_string()),
+            ("temperature", temperature),
+        ];
+        let mut lines = vec![];
+        for (name, value) in items {
+            lines.push(format!("{name:<20}{value}"));
+        }
+        lines.push("".into());
+        for message in &self.messages {
+            match message.role {
+                MessageRole::System => {
+                    continue;
+                }
+                MessageRole::Assistant => {
+                    lines.push(render.render(&message.content));
+                    lines.push("".into());
+                }
+                MessageRole::User => {
+                    lines.push(format!("{}）{}", self.name, message.content));
+                }
+            }
+        }
+        let output = lines.join("\n");
+        Ok(output)
+    }
+
     pub fn update_role(&mut self, role: Option<Role>) -> Result<()> {
         self.guard_empty()?;
         self.temperature = role.as_ref().and_then(|v| v.temperature);