history

Show the cross-session environmental and cost history.

Step 1: Load history and merge live session state

HISTORY_FILE="$HOME/.ecoguilt/history.jsonl"

# Load persisted records (may be empty or missing for a brand-new session)
if [ -f "$HISTORY_FILE" ]; then
  HISTORY_JSON=$(tac "$HISTORY_FILE" | jq -sc '
    group_by(.session_id) |
    map(max_by(.last_updated))
  ')
else
  HISTORY_JSON='[]'
fi

# Find the current session's live state file via CWD hash
CWD_HASH=$(echo -n "$PWD" | md5 2>/dev/null || echo -n "$PWD" | md5sum 2>/dev/null | cut -d' ' -f1)
LIVE_SESSION_ID=$(cat "/tmp/ecoguilt-cwd-${CWD_HASH}.txt" 2>/dev/null)
if [ -z "$LIVE_SESSION_ID" ]; then
  LIVE_SESSION_ID=$(ls -t /tmp/ecoguilt-*.json 2>/dev/null | grep -v 'models\|test\|recommend\|cwd\|anomaly\|fact' | head -1 | sed 's|/tmp/ecoguilt-||; s|\.json||')
fi
LIVE_STATE=""
if [ -n "$LIVE_SESSION_ID" ]; then
  LIVE_STATE=$(cat "/tmp/ecoguilt-${LIVE_SESSION_ID}.json" 2>/dev/null)
fi

# Merge: if live state exists and has more tokens than what's in history, replace that session's entry.
# This ensures the current session always reflects up-to-date numbers, even mid-turn.
if [ -n "$LIVE_STATE" ] && [ "$(echo "$LIVE_STATE" | jq '.total_tokens // 0')" -gt 0 ]; then
  TODAY=$(date -u +%Y-%m-%d)
  LIVE_RECORD=$(echo "$LIVE_STATE" | jq --arg sid "$LIVE_SESSION_ID" --arg date "$TODAY" --arg cwd "$PWD" '{
    session_id: $sid,
    date: $date,
    cwd: $cwd,
    last_updated: "live",
    model: .model,
    cost_usd: (.cost_usd | tonumber),
    total_tokens: .total_tokens,
    input_tokens: .input_tokens,
    output_tokens: .output_tokens,
    total_kwh: (.total_kwh | tonumber),
    co2_g: (.co2_g | tonumber),
    water_ml: .water_ml,
    total_cache_read: .total_cache_read,
    total_cache_write: .total_cache_write,
    turn_tokens: 0,
    turn_cost_usd: 0,
    anomaly: null
  }')
  # Replace or prepend the live session entry
  SESSIONS=$(echo "$HISTORY_JSON" | jq --argjson live "$LIVE_RECORD" '
    [.[] | select(.session_id != $live.session_id)] + [$live] |
    sort_by(.date) | reverse
  ')
else
  SESSIONS=$(echo "$HISTORY_JSON" | jq 'sort_by(.date) | reverse')
fi
echo "$SESSIONS"

If SESSIONS is empty ([]) and there's no live state, tell the user no history exists yet.