fetch_and_plot_rush_techtonique.sh

#!/bin/bash

# === CONFIG ===
OUTPUT_JSON="sims.json"
OUTPUT_CSV="sims.csv"
OUTPUT_IMAGE="plot.png"

# === 1. Prompt for Bearer token ===
read -p "Enter your Bearer token: " AUTH_TOKEN

# === 2. Fetch data from API ===
curl -s -X GET "https://www.techtonique.net/scenarios/simulate/?model=GBM&n=6&horizon=5&frequency=quarterly&x0=100&theta1=0.1&theta2=0.2&theta3=0.3&seed=123" \
     -H "accept: application/json" \
     -H "Authorization: Bearer $AUTH_TOKEN" > "$OUTPUT_JSON"

if [ $? -ne 0 ]; then
  echo "❌ Error fetching data from API"
  exit 1
fi

# === 3. Convert JSON to long-format CSV === 
jq -r '
  .sims as $sims
  | $sims | length as $n_series
  | range(0; $n_series) as $i
  | range(0; $sims[$i] | length) as $t
  | "\($t),\($sims[$i][$t]),\($i)"' "$OUTPUT_JSON" > "$OUTPUT_CSV"

# === 4. Add header row (macOS-safe) ===
echo "step,value,series" > temp.csv
tail -n +2 "$OUTPUT_CSV" >> temp.csv
mv temp.csv "$OUTPUT_CSV"

# === 5. Plot with rush ===
#rush plot --x step --y value --group series "$OUTPUT_CSV" > "$OUTPUT_IMAGE"
rush plot \
  --x step \
  --y value \
  --group series \
  --color series \
  --alpha 0.6 \
  --title "Simulated GBM Paths" \
  "$OUTPUT_CSV" > "$OUTPUT_IMAGE"

echo "✅ Spaghetti plot saved to: $OUTPUT_IMAGE"