#!/usr/bin/env bash
# squeez statusline — emits a compact status line for Claude Code statusLine hook.
# Reads session data from ~/.claude/squeez/ and outputs a single line.

SQUEEZ_DIR="${SQUEEZ_DIR:-$HOME/.claude/squeez}"
SESSION_FILE="$SQUEEZ_DIR/sessions/current.json"
CONTEXT_FILE="$SQUEEZ_DIR/sessions/context.json"
SUMMARIES_FILE="$SQUEEZ_DIR/memory/summaries.jsonl"

# Bail silently if no session data
if [[ ! -f "$SESSION_FILE" ]]; then
    exit 0
fi

# Read session fields
saved_tokens=0
total_calls=0
if command -v python3 &>/dev/null; then
    read -r saved_tokens total_calls < <(python3 - <<'PYEOF'
import json, sys
try:
    with open("'"$SESSION_FILE"'") as f:
        d = json.load(f)
    saved = d.get("tokens_saved", 0)
    calls = d.get("total_calls", 0)
    print(saved, calls)
except Exception:
    print(0, 0)
PYEOF
)
fi

# Read agent_spawns from context.json
agent_spawns=0
if [[ -f "$CONTEXT_FILE" ]] && command -v python3 &>/dev/null; then
    agent_spawns=$(python3 - <<'PYEOF'
import json
try:
    with open("'"$CONTEXT_FILE"'") as f:
        d = json.load(f)
    print(d.get("agent_spawns", 0))
except Exception:
    print(0)
PYEOF
)
fi

# Read efficiency_overall_bp from last line of summaries.jsonl
efficiency_bp=""
if [[ -f "$SUMMARIES_FILE" ]] && command -v python3 &>/dev/null; then
    efficiency_bp=$(python3 - <<'PYEOF'
import json
try:
    with open("'"$SUMMARIES_FILE"'") as f:
        lines = f.readlines()
    if lines:
        last = json.loads(lines[-1].strip())
        val = last.get("efficiency_overall_bp")
        if val is not None:
            print(val)
except Exception:
    pass
PYEOF
)
fi

# Build output line
parts=("squeez")

if [[ "$saved_tokens" -gt 0 ]]; then
    parts+=("| -${saved_tokens}tk")
fi

if [[ "$total_calls" -gt 0 ]]; then
    parts+=("| ${total_calls} calls")
fi

if [[ "$agent_spawns" -gt 0 ]]; then
    parts+=("| ${agent_spawns} agents")
fi

if [[ -n "$efficiency_bp" ]] && [[ "$efficiency_bp" -gt 0 ]]; then
    eff_pct=$(python3 -c "print(f'{$efficiency_bp/100:.1f}')" 2>/dev/null || echo "")
    if [[ -n "$eff_pct" ]]; then
        parts+=("| Eff: ${eff_pct}%")
    fi
fi

echo "${parts[*]}"