name: BotServer CI/CD

on:
  push:
    branches: ["main"]
  pull_request:
    branches: ["main"]

env:
  CARGO_BUILD_JOBS: 8
  CARGO_NET_RETRY: 10
  RUSTC_WRAPPER: sccache
  WORKSPACE: /opt/gbo/data/botserver
  CARGO_TARGET_DIR: /opt/gbo/data/botserver/target
  PATH: /home/gbuser/.cargo/bin:/home/gbuser/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin

jobs:
  build:
    runs-on: gbo

    steps:
      - name: Setup Git
        run: |
          git config --global http.sslVerify false
          git config --global --add safe.directory "*"

      - name: Setup Workspace
        run: |
          mkdir -p $WORKSPACE
          cd $WORKSPACE
          
          # Fetch latest changes first
          echo "=== Checking for updates ==="
          
          # Update or clone botlib
          if [ -d botlib/.git ]; then
            echo "Updating botlib..."
            git -C botlib fetch origin main
            if ! git -C botlib diff origin/main --quiet 2>/dev/null; then
              echo "botlib has changes, pulling..."
              git -C botlib pull --ff-only origin main
            else
              echo "botlib up to date"
            fi
          else
            git clone --branch main https://alm.pragmatismo.com.br/GeneralBots/botlib.git botlib
          fi
          
          # Update or clone botserver
          if [ -d botserver/.git ]; then
            echo "Updating botserver..."
            git -C botserver fetch origin main
            if ! git -C botserver diff origin/main --quiet 2>/dev/null; then
              echo "botserver has changes, pulling..."
              git -C botserver pull --ff-only origin main
            else
              echo "botserver up to date"
            fi
          else
            git clone --branch main https://alm.pragmatismo.com.br/GeneralBots/BotServer.git botserver
          fi
          
          # Get workspace Cargo.toml from gb
          if [ -d /opt/gbo/data/gb-ws/.git ]; then
            git -C /opt/gbo/data/gb-ws fetch origin main
            if ! git -C /opt/gbo/data/gb-ws diff origin/main --quiet 2>/dev/null; then
              echo "gb-ws has changes, pulling..."
              git -C /opt/gbo/data/gb-ws pull --ff-only origin main
            else
              echo "gb-ws up to date"
            fi
          else
            git clone --branch main https://alm.pragmatismo.com.br/GeneralBots/gb.git /opt/gbo/data/gb-ws
          fi
          
          # Only rebuild if there were actual changes
          echo "$WORKSPACE" > /tmp/workspace_path
          
          cp /opt/gbo/data/gb-ws/Cargo.toml Cargo.toml
          for m in botapp botdevice bottest botui botbook botmodels botplugin bottemplates; do
            grep -v "\"$m\"" Cargo.toml > /tmp/c.toml && mv /tmp/c.toml Cargo.toml
          done
          
          # Ensure target dir exists (use persistent location for sccache)
          mkdir -p /opt/gbo/data/botserver/target
          
          # Pre-fetch dependencies
          cargo fetch 2>/dev/null || true

      - name: Cache sccache
        uses: actions/cache@v4
        with:
          path: ~/.cache/sccache
          key: sccache-botserver-${{ github.sha }}
          restore-keys: sccache-botserver-

      - name: Install system dependencies
        run: |
          PKGS="libpq-dev libssl-dev liblzma-dev pkg-config"
          MISSING=""
          for pkg in $PKGS; do
            dpkg -s "$pkg" >/dev/null 2>&1 || MISSING="$MISSING $pkg"
          done
          if [ -n "$MISSING" ]; then
            sudo apt-get update -qq -o Acquire::Retries=3 -o Acquire::http::Timeout=30
            sudo apt-get install -y --no-install-recommends $MISSING
          else
            echo "All system dependencies already installed"
          fi

      - name: Build BotServer
        working-directory: /opt/gbo/data/botserver
        run: |
          set -e
          export SCCACHE_IDLE_TIMEOUT=300
          export SCCACHE_CACHE_SIZE=10G
          sccache --stop-server 2>/dev/null || true
          sleep 1
          sccache --start-server
          
          # Check if there are changes to rebuild
          CHANGES=$(git -C /opt/gbo/data/botserver/botserver diff origin/main --name-only 2>/dev/null || echo "changed")
          if [ -z "$CHANGES" ]; then
            echo "No changes detected in botserver, checking if binary exists..."
            if [ -f /opt/gbo/data/botserver/target/debug/botserver ]; then
              echo "Binary already exists, skipping build"
              echo "=== sccache stats (before) ==="
              sccache --show-stats || true
              exit 0
            fi
          fi
          
          echo "=== Starting build in background ==="
          cargo build -p botserver -j 8 > /tmp/build.log 2>&1 &
          BUILD_PID=$!
          echo "Build PID: $BUILD_PID"

          echo "=== Waiting for build to complete (PID: $BUILD_PID) ==="
          while kill -0 $BUILD_PID 2>/dev/null; do
            echo "Build in progress... (sleeping 30s)"
            sleep 30
          done

          wait $BUILD_PID
          EXIT_CODE=$?

          echo "=== Build finished with exit code: $EXIT_CODE ==="

          if [ $EXIT_CODE -ne 0 ]; then
            echo "=== Build FAILED ==="
            tail -100 /tmp/build.log
            exit $EXIT_CODE
          fi

          echo "=== sccache stats ==="
          sccache --show-stats
          echo "=== Binary info ==="
          ls -lh target/debug/botserver
          stat -c '%y' target/debug/botserver

      - name: Save build log
        if: always()
        run: cp /tmp/build.log /tmp/botserver-$(date +%Y%m%d-%H%M%S).log || true

      - name: Deploy via ssh tar gzip
        run: |
          set -e
          SSH_ARGS="-i /home/gbuser/.ssh/id_ed25519 -o StrictHostKeyChecking=no -o ConnectTimeout=5 -o ServerAliveInterval=5 -o ServerAliveCountMax=2 -o BatchMode=yes"
          echo "=== Deploy started ==="
          echo "Step 1: Checking binary..."
          ls -lh /opt/gbo/data/botserver/target/debug/botserver
          echo "Step 2: Backing up old binary (ignore if not exists)..."
          ssh $SSH_ARGS system "cp /opt/gbo/bin/botserver /tmp/botserver.bak 2>/dev/null || true"
          echo "Step 3: Stopping botserver service..."
          ssh $SSH_ARGS system "sudo systemctl stop botserver || true"
          echo "Step 4: Transferring new binary..."
          tar cf - -C /opt/gbo/data/botserver/target/debug botserver | gzip -1 | ssh $SSH_ARGS system "gzip -d | tar xf - -C /opt/gbo/bin && chmod +x /opt/gbo/bin/botserver && chown gbuser:gbuser /opt/gbo/bin/botserver && echo 'Transfer complete'"
          echo "Step 5: Starting botserver service..."
          ssh $SSH_ARGS system "sudo systemctl start botserver && echo 'Botserver started'"
          echo "=== Deploy completed ==="

      - name: Verify botserver started
        run: |
          sleep 30
          SSH_ARGS="-i /home/gbuser/.ssh/id_ed25519 -o StrictHostKeyChecking=no -o ConnectTimeout=5 -o ServerAliveInterval=5 -o ServerAliveCountMax=2 -o BatchMode=yes"
          ssh $SSH_ARGS system "pgrep -f botserver >/dev/null && echo 'OK: botserver is running' || echo 'WARNING: botserver may still be starting'"

      - name: Save deploy log
        if: always()
        run: cp /tmp/deploy.log /tmp/deploy-$(date +%Y%m%d-%H%M%S).log || true