#!/usr/bin/env bash
# KeiSei tamagotchi — statusline renderer. Outputs ONE line.
# SSoT: reads the kit's OWN tracking, does not maintain a parallel one.
#   - running sub-agents  ← ~/.claude/memory/time-metrics/.task-<id>.start
#                            (written by hooks/task-timer.sh: {id,desc,type,start_epoch})
#   - agent token / cost  ← ~/.claude/memory/agent-events.jsonl
#                            (written by hooks/agent-event-done.sh: {tokens,cost_usd,...})
#   - mood / lang / plan  ← ~/.claude/pet/state (keisei-pet-update.sh)

set -u
if [ ! -t 0 ]; then cat >/dev/null 2>&1 || true; fi

STATE="${HOME}/.claude/pet/state"
TM_DIR="${HOME}/.claude/memory/time-metrics"
EVENTS="${HOME}/.claude/memory/agent-events.jsonl"

mood="neutral"; message=""; since=$(date +%s)
rust_today=0; patents_today=0; violations=0; lang=""; plan=""
# shellcheck source=/dev/null
[ -f "$STATE" ] && source "$STATE" 2>/dev/null || true
now=$(date +%s)
dim=$'\033[2m'; reset=$'\033[0m'

_agent_emoji() {
  case "$1" in
    *researcher*) echo "🔬";; *architect*) echo "🏗️";; *critic*) echo "🔪";;
    *security*) echo "🛡️";; *validator*) echo "✅";; *cost*) echo "💰";;
    *modal*) echo "☁️";; *fal*) echo "🎨";; *ml-implementer*|*ml_implementer*) echo "🧠";;
    *ml-researcher*|*ml_researcher*) echo "📚";; *infra*) echo "🔧";; *implementer*) echo "⚙️";;
    *patent*) echo "📜";; Explore|*explore*) echo "🔭";; Plan|*plan*) echo "📐";;
    *) echo "🤖";;
  esac
}
_elapsed() {
  local s=$1
  if   [ "$s" -lt 60 ];   then printf '%ds' "$s"
  elif [ "$s" -lt 3600 ]; then printf '%dm' $(( s / 60 ))
  else                         printf '%dh%dm' $(( s / 3600 )) $(( (s % 3600) / 60 )); fi
}

# ── running sub-agents (from task-timer's .task-*.start) ─────────────────────
agents=""; n_agents=0
if [ -d "$TM_DIR" ]; then
  for f in "$TM_DIR"/.task-*.start; do
    [ -f "$f" ] || continue
    typ="$(jq -r '.type // "agent"' "$f" 2>/dev/null)"
    st="$(jq -r '.start_epoch // empty' "$f" 2>/dev/null)"
    [ -z "$st" ] && continue
    age=$(( now - st ))
    [ "$age" -gt 7200 ] && continue   # ignore stale (kit removes on done)
    short="$(printf '%s' "$typ" | tr '[:upper:]' '[:lower:]' | sed -E 's/[^a-z0-9].*$//' | cut -c1-12)"
    agents+=" $(_agent_emoji "$typ")${short}·$(_elapsed "$age")"
    n_agents=$((n_agents+1))
  done
fi

# ── agent token / cost spend today (from agent-events.jsonl) ─────────────────
spend=""
if [ -f "$EVENTS" ]; then
  today="$(date -u +%Y-%m-%d)"
  read -r tot_tok tot_cost < <(awk -v d="$today" '
    index($0,d)>0 {
      t=0; c=0
      if (match($0,/total_tokens[^0-9]*[0-9]+/)) { s=substr($0,RSTART,RLENGTH); gsub(/[^0-9]/,"",s); t=s }
      if (match($0,/"cost_usd"[: ]*[0-9.]+/)) { s=substr($0,RSTART,RLENGTH); gsub(/[^0-9.]/,"",s); c=s }
      T+=t; C+=c
    } END { printf "%d %.4f", T+0, C+0 }' "$EVENTS" 2>/dev/null)
  if [ "${tot_cost:-0}" != "0.0000" ] && [ -n "${tot_cost:-}" ]; then
    spend=" 💰\$$(printf '%.2f' "$tot_cost" 2>/dev/null)"
  elif [ "${tot_tok:-0}" -gt 0 ] 2>/dev/null; then
    if [ "$tot_tok" -ge 1000 ]; then spend=" 🪙$(( tot_tok / 1000 ))k"; else spend=" 🪙${tot_tok}"; fi
  fi
fi

# ── mood face ───────────────────────────────────────────────────────────────
idle=$(( now - since ))
if [ "$idle" -gt 300 ] && [ "$mood" != "angry" ] && [ "$mood" != "alert" ] && [ "$n_agents" -eq 0 ]; then
  mood="sleep"; message="zzz"
fi
case "$mood" in
  happy) face="(ᵔᴥᵔ)"; color=$'\033[32m';; proud) face="(•̀ᴗ•́)و"; color=$'\033[1;32m';;
  thinking) face="(⊙.⊙)"; color=$'\033[36m';; alert) face="(ʘᴗʘ)"; color=$'\033[33m';;
  angry) face="(ò_ó)"; color=$'\033[31m';; sad) face="(╥﹏╥)"; color=$'\033[34m';;
  sleep) face="(-.-)"; color=$'\033[2;37m';; *) face="(•ᴗ•)"; color=$'\033[37m';;
esac

stats=""
[ "${rust_today:-0}"    -gt 0 ] 2>/dev/null && stats+=" 🦀${rust_today}"
[ "${patents_today:-0}" -gt 0 ] 2>/dev/null && stats+=" 📜${patents_today}"
[ "${violations:-0}"    -gt 0 ] 2>/dev/null && stats+=" ⚠${violations}"
proj="${PWD##*/}"; [ -z "$proj" ] && proj="~"

out=""
if [ -n "${agents// }" ]; then out+="${agents# }${spend}  "
elif [ -n "$spend" ];      then out+="${spend# }  "; fi
[ -n "$plan" ] && out+="${plan} "
out+="${color}${face}${reset}"
[ -n "$message" ] && out+=" ${dim}${message}${reset}"
out+="${stats}"
[ -n "$lang" ] && out+=" ${lang}"
out+="  ${dim}📁 ${proj}${reset}"
printf '%s' "$out"