feat: add Atuin AI inline CLI MVP (#3178)

1 files changed, 70 insertions, 0 deletions

diff --git a/crates/atuin-ai/src/commands/init.rs b/crates/atuin-ai/src/commands/init.rs
new file mode 100644
index 00000000..bf5c6256
--- /dev/null
+++ b/crates/atuin-ai/src/commands/init.rs
@@ -0,0 +1,70 @@
+pub async fn run() -> eyre::Result<()> {
+    let zsh_function = generate_zsh_integration();
+    println!("{}", zsh_function);
+    Ok(())
+}
+
+/// Generate the zsh integration function - pure function for easy testing
+pub fn generate_zsh_integration() -> &'static str {
+    r#"
+# TUI uses an alternate screen, so no explicit cleanup is needed.
+_atuin_ai_cleanup() {
+    true
+}
+
+# Question mark at start of line - natural language mode
+_atuin_ai_question_mark() {
+    # If buffer is empty or just contains '?', trigger natural language mode
+    if [[ -z "$BUFFER" || "$BUFFER" == "?" ]]; then
+        BUFFER=""
+        local output
+        output=$(atuin-ai inline --natural-language 3>&1 1>&2 2>&3)
+
+        # Clean up the inline viewport
+        _atuin_ai_cleanup
+
+        if [[ $output == __atuin_ai_cancel__ ]]; then
+            zle reset-prompt
+        elif [[ $output == __atuin_ai_execute__:* ]]; then
+            RBUFFER=""
+            LBUFFER=${output#__atuin_ai_execute__:}
+            zle reset-prompt
+            zle accept-line
+        elif [[ $output == __atuin_ai_insert__:* ]]; then
+            RBUFFER=""
+            LBUFFER=${output#__atuin_ai_insert__:}
+            zle reset-prompt
+        elif [[ -n $output ]]; then
+            RBUFFER=""
+            LBUFFER=$output
+            zle reset-prompt
+        else
+            zle reset-prompt
+        fi
+    else
+        LBUFFER="${LBUFFER}?"
+    fi
+}
+
+# Set up keybindings
+zle -N _atuin_ai_question_mark
+bindkey '?' _atuin_ai_question_mark # Question mark
+"#
+    .trim()
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_generate_zsh_integration() {
+        let result = generate_zsh_integration();
+        assert!(result.contains("_atuin_ai_question_mark"));
+        assert!(result.contains("bindkey"));
+        assert!(result.contains("atuin-ai inline"));
+        assert!(result.contains("__atuin_ai_cancel__"));
+        assert!(result.contains("__atuin_ai_execute__"));
+        assert!(result.contains("__atuin_ai_insert__"));
+    }
+}