#!/bin/sh
# Tiny fake `claude` CLI for integration tests. Mimics the wire protocol:
# reads newline-delimited JSON frames on stdin, emits assistant + result
# frames on stdout. Echoes whatever the user said.
#
# Args: ignores everything except `-v` (prints a version, exits 0).

if [ "$1" = "-v" ]; then
    echo "2.1.0 (Claude Code)"
    exit 0
fi

# Read one user-message frame (we don't actually parse it — just block on stdin).
# After the first newline we emit one assistant message + one result message.
read -r FIRST_LINE
printf '{"type":"assistant","message":{"role":"assistant","content":[{"type":"text","text":"hello from fake"}],"model":"fake-model"},"session_id":"s1","uuid":"u1"}\n'
printf '{"type":"result","subtype":"success","duration_ms":1,"duration_api_ms":1,"is_error":false,"num_turns":1,"session_id":"s1","total_cost_usd":0.0001}\n'

# Stay alive until stdin closes (so the parent can drain stdout cleanly).
cat > /dev/null