#!/bin/bash
# Context percentage progress bar for ccstatusline custom-command widget
# Receives Claude Code JSON via stdin

input=$(cat)
if ! command -v jq >/dev/null 2>&1; then
  echo "Ctx: ?"
  exit 0
fi

# Extract context window info
CTX_SIZE=$(echo "$input" | jq -r '.context_window.context_window_size // 200000')
USAGE=$(echo "$input" | jq '.context_window.current_usage // null')

if [ "$USAGE" = "null" ] || [ -z "$USAGE" ]; then
  echo "Ctx: --"
  exit 0
fi

CURRENT=$(echo "$USAGE" | jq '(.input_tokens // 0) + (.cache_creation_input_tokens // 0) + (.cache_read_input_tokens // 0)')

# Usable = 80% of max (auto-compact threshold)
USABLE=$(( CTX_SIZE * 80 / 100 ))
USED_PCT=$(( CURRENT * 100 / USABLE ))
[ "$USED_PCT" -lt 0 ] && USED_PCT=0
[ "$USED_PCT" -gt 100 ] && USED_PCT=100

# Build progress bar (width=12) - fills up as usage increases
W=12
FILLED=$(( USED_PCT * W / 100 ))
EMPTY=$(( W - FILLED ))
BAR=$(printf '%*s' "$FILLED" '' | tr ' ' '█')$(printf '%*s' "$EMPTY" '' | tr ' ' '░')

printf '%s %s%%' "[$BAR]" "$USED_PCT"