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

###############################################
# Resolve important directories
###############################################

# Directory where this script lives
ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"

# Services live one directory above the script's directory
SERVICES_DIR="$(cd "$ROOT/.." && pwd)"

###############################################
# Skip list (folder names, match exactly)
###############################################
SKIP_FILE="$ROOT/gateway_skip.txt"
SKIP_PROJECTS=()

if [[ -f "$SKIP_FILE" ]]; then
    # Read non-empty lines ignoring comments
    while IFS= read -r line; do
        [[ -z "$line" || "$line" =~ ^# ]] && continue
        SKIP_PROJECTS+=("$line")
    done < "$SKIP_FILE"
else
    echo "WARNING: skip-projects.txt not found — no projects will be skipped."
fi

echo "----------------------------------------"
echo "  Finding GraphQL services..."
echo "----------------------------------------"

SERVICE_LIST=()

# Convert skip projects into a single searchable string
SKIP_STRING=" ${SKIP_PROJECTS[*]} "

# Find service directories
shopt -s nullglob
for FOLDER in "$SERVICES_DIR"/FictionArchive.Service.*; do
    [ -d "$FOLDER" ] || continue

    PROJECT_NAME="$(basename "$FOLDER")"

    # Skip entries that match the skip list
    if [[ "$SKIP_STRING" == *" $PROJECT_NAME "* ]]; then
        echo "Skipping service: $PROJECT_NAME"
        continue
    fi

    echo "Found service: $PROJECT_NAME"
    SERVICE_LIST+=("$FOLDER")
done
shopt -u nullglob

echo
echo "----------------------------------------"
echo "  Exporting schemas and packing subgraphs..."
echo "----------------------------------------"

for SERVICE in "${SERVICE_LIST[@]}"; do
    PROJECT_NAME="$(basename "$SERVICE")"

    echo "Processing service: $PROJECT_NAME"
    pushd "$SERVICE" >/dev/null

    echo "Building service..."
    dotnet build -c Release >/dev/null

    # Automatically detect built DLL in bin/Release/<TFM>/
    DLL_PATH="$(find "bin/Release" -maxdepth 3 -name '*.dll' | head -n 1)"
    if [[ -z "$DLL_PATH" ]]; then
        echo "ERROR: Could not locate DLL for $PROJECT_NAME"
        popd >/dev/null
        exit 1
    fi

    echo "Running schema export..."
    dotnet exec "$DLL_PATH" schema export --output schema.graphql

    echo "Running subgraph pack..."
    fusion subgraph pack

    popd >/dev/null
    echo "Completed: $PROJECT_NAME"
    echo
done

echo "----------------------------------------"
echo "  Running fusion compose..."
echo "----------------------------------------"

pushd "$ROOT" >/dev/null

# Remove old composition file
rm -f gateway.fgp

for SERVICE in "${SERVICE_LIST[@]}"; do
    SERVICE_NAME="$(basename "$SERVICE")"

    echo "Composing subgraph: $SERVICE_NAME"

    # Note: Fusion compose must reference parent dir (services live above ROOT)
    fusion compose -p gateway.fgp -s "../$SERVICE_NAME"
done

popd >/dev/null

echo "----------------------------------------"
echo "  Fusion build complete!"
echo "----------------------------------------"