#!/usr/bin/env bash
set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
PROJECT_ROOT="$(dirname "$SCRIPT_DIR")"
API_URL="${API_URL:-http://localhost:18980}"

cleanup() {
    echo "Cleaning up..."
}
trap cleanup EXIT

echo "=== Satellite Provider Performance Tests ==="
echo "API URL: $API_URL"
echo ""

PASS=0
FAIL=0

check_threshold() {
    local test_name="$1"
    local actual_ms="$2"
    local threshold_ms="$3"

    if (( actual_ms <= threshold_ms )); then
        echo "  ✓ $test_name: ${actual_ms}ms (threshold: ${threshold_ms}ms)"
        PASS=$((PASS + 1))
    else
        echo "  ✗ $test_name: ${actual_ms}ms EXCEEDS threshold ${threshold_ms}ms"
        FAIL=$((FAIL + 1))
    fi
}

wait_region_completed() {
    local region_id="$1"
    local timeout_s="${2:-180}"
    local elapsed=0
    while (( elapsed < timeout_s )); do
        local status
        status=$(curl -s "$API_URL/api/satellite/region/$region_id" | grep -o '"status":"[^"]*"' | head -1 || true)
        case "$status" in
            *completed*) return 0 ;;
            *failed*) echo "  region $region_id failed during wait" >&2; return 2 ;;
        esac
        sleep 2
        elapsed=$((elapsed + 2))
    done
    return 1
}

# PT-01: Tile download latency for a fresh tile (cold path).
# Uses lat/lon offset so the cache miss is likely; threshold 30s.
echo "PT-01: Tile Download Latency (cold) (threshold: 30000ms)"
PT01_LAT="47.461347"
PT01_LON="37.646663"
START=$(date +%s%N)
HTTP_CODE=$(curl -s -o /dev/null -w "%{http_code}" "$API_URL/api/satellite/tiles/latlon?Latitude=$PT01_LAT&Longitude=$PT01_LON&ZoomLevel=18")
END=$(date +%s%N)
ELAPSED_MS=$(( (END - START) / 1000000 ))
if [[ "$HTTP_CODE" == "200" ]]; then
    check_threshold "Tile download (cold)" "$ELAPSED_MS" 30000
else
    echo "  ✗ PT-01: HTTP $HTTP_CODE (expected 200)"
    FAIL=$((FAIL + 1))
fi

echo ""
echo "PT-02: Cached Tile Retrieval Latency (threshold: 500ms)"
START=$(date +%s%N)
HTTP_CODE=$(curl -s -o /dev/null -w "%{http_code}" "$API_URL/api/satellite/tiles/latlon?Latitude=47.461747&Longitude=37.647063&ZoomLevel=18")
END=$(date +%s%N)
ELAPSED_MS=$(( (END - START) / 1000000 ))

if [[ "$HTTP_CODE" == "200" ]]; then
    check_threshold "Cached tile retrieval" "$ELAPSED_MS" 500
else
    echo "  ✗ PT-02: HTTP $HTTP_CODE (expected 200) - tile may not be cached yet"
    FAIL=$((FAIL + 1))
fi

# PT-03: Region 200m at zoom 18, no stitching, threshold 60s end-to-end.
echo ""
echo "PT-03: Region Processing 200m / zoom 18 (threshold: 60000ms)"
PT03_ID=$(uuidgen | tr '[:upper:]' '[:lower:]')
PT03_BODY="{\"id\":\"$PT03_ID\",\"latitude\":47.461747,\"longitude\":37.647063,\"sizeMeters\":200,\"zoomLevel\":18,\"stitchTiles\":false}"
START=$(date +%s%N)
HTTP_CODE=$(curl -s -o /dev/null -w "%{http_code}" -X POST -H "Content-Type: application/json" -d "$PT03_BODY" "$API_URL/api/satellite/request")
if [[ "$HTTP_CODE" == "200" || "$HTTP_CODE" == "202" ]]; then
    if wait_region_completed "$PT03_ID" 60; then
        END=$(date +%s%N)
        ELAPSED_MS=$(( (END - START) / 1000000 ))
        check_threshold "Region 200m/z18" "$ELAPSED_MS" 60000
    else
        echo "  ✗ PT-03: region did not complete within 60s"
        FAIL=$((FAIL + 1))
    fi
else
    echo "  ✗ PT-03: enqueue HTTP $HTTP_CODE (expected 200/202)"
    FAIL=$((FAIL + 1))
fi

# PT-04: Region 500m at zoom 18 with stitching, threshold 120s end-to-end.
echo ""
echo "PT-04: Region Processing 500m / zoom 18 + stitch (threshold: 120000ms)"
PT04_ID=$(uuidgen | tr '[:upper:]' '[:lower:]')
PT04_BODY="{\"id\":\"$PT04_ID\",\"latitude\":47.461747,\"longitude\":37.647063,\"sizeMeters\":500,\"zoomLevel\":18,\"stitchTiles\":true}"
START=$(date +%s%N)
HTTP_CODE=$(curl -s -o /dev/null -w "%{http_code}" -X POST -H "Content-Type: application/json" -d "$PT04_BODY" "$API_URL/api/satellite/request")
if [[ "$HTTP_CODE" == "200" || "$HTTP_CODE" == "202" ]]; then
    if wait_region_completed "$PT04_ID" 120; then
        END=$(date +%s%N)
        ELAPSED_MS=$(( (END - START) / 1000000 ))
        check_threshold "Region 500m/z18 stitched" "$ELAPSED_MS" 120000
    else
        echo "  ✗ PT-04: region did not complete within 120s"
        FAIL=$((FAIL + 1))
    fi
else
    echo "  ✗ PT-04: enqueue HTTP $HTTP_CODE (expected 200/202)"
    FAIL=$((FAIL + 1))
fi

# PT-05: 5 concurrent regions all complete within 5min (300s) end-to-end.
echo ""
echo "PT-05: Concurrent Region Processing (5 in 300000ms)"
PT05_IDS=()
PT05_START=$(date +%s%N)
for i in 1 2 3 4 5; do
    rid=$(uuidgen | tr '[:upper:]' '[:lower:]')
    PT05_IDS+=("$rid")
    LAT=$(awk "BEGIN { printf \"%.6f\", 47.461747 + 0.001 * $i }")
    LON=$(awk "BEGIN { printf \"%.6f\", 37.647063 + 0.001 * $i }")
    BODY="{\"id\":\"$rid\",\"latitude\":$LAT,\"longitude\":$LON,\"sizeMeters\":200,\"zoomLevel\":18,\"stitchTiles\":false}"
    HTTP_CODE=$(curl -s -o /dev/null -w "%{http_code}" -X POST -H "Content-Type: application/json" -d "$BODY" "$API_URL/api/satellite/request")
    if [[ "$HTTP_CODE" != "200" && "$HTTP_CODE" != "202" ]]; then
        echo "  ✗ PT-05: enqueue $i HTTP $HTTP_CODE (expected 200/202)"
        FAIL=$((FAIL + 1))
    fi
done

PT05_OK=1
for rid in "${PT05_IDS[@]}"; do
    if ! wait_region_completed "$rid" 300; then
        PT05_OK=0
        echo "  ✗ PT-05: region $rid did not complete within 300s"
        break
    fi
done

if (( PT05_OK == 1 )); then
    PT05_END=$(date +%s%N)
    ELAPSED_MS=$(( (PT05_END - PT05_START) / 1000000 ))
    check_threshold "5 concurrent regions" "$ELAPSED_MS" 300000
else
    FAIL=$((FAIL + 1))
fi

echo ""
echo "PT-06: Route Point Interpolation Speed (threshold: 5000ms)"
ROUTE_ID=$(uuidgen | tr '[:upper:]' '[:lower:]')
BODY="{\"id\":\"$ROUTE_ID\",\"name\":\"Perf Test\",\"regionSizeMeters\":300,\"zoomLevel\":18,\"points\":[{\"lat\":48.276067,\"lon\":37.384458},{\"lat\":48.270740,\"lon\":37.374029}]}"

START=$(date +%s%N)
HTTP_CODE=$(curl -s -o /dev/null -w "%{http_code}" -X POST -H "Content-Type: application/json" -d "$BODY" "$API_URL/api/satellite/route")
END=$(date +%s%N)
ELAPSED_MS=$(( (END - START) / 1000000 ))

if [[ "$HTTP_CODE" == "200" ]]; then
    check_threshold "Route creation (2 points)" "$ELAPSED_MS" 5000
else
    echo "  ✗ PT-06: HTTP $HTTP_CODE (expected 200)"
    FAIL=$((FAIL + 1))
fi

echo ""
echo "=== Performance Test Summary ==="
echo "  Passed: $PASS"
echo "  Failed: $FAIL"
echo ""

if [[ $FAIL -gt 0 ]]; then
    echo "FAILED: $FAIL performance threshold(s) exceeded"
    exit 1
fi

echo "ALL PERFORMANCE TESTS PASSED"
exit 0