#!/usr/bin/env bash
# Deploy commands: guide:next (dev guide to mc.next.black.local).
#
# This module is Tourguide-owned (see .project/team-leads/tourguide.md).
#
# Host configuration (from .env or shell rc):
#   NEXT_DEPLOY_HOST  — SSH target for mc.next.black.local static root.
#                       Default: "lilith@black.local".
#   NEXT_DEPLOY_PATH  — destination directory on the remote host.
#                       Default: "/bigdisk/next/mc/".
#
# The target host-nginx vhost + bind-mount are set up in
# `/bigdisk/nginx/nginx.conf` + `/bigdisk/nginx/docker-compose.yml` on
# black.local. Infra + objective: p1-15.

: "${NEXT_DEPLOY_HOST:=lilith@black.local}"
: "${NEXT_DEPLOY_PATH:=/bigdisk/next/mc/}"

# Bake-simcache scenarios. Empty = skip bake step entirely in `deploy:guide:next`.
# Comma-separated list = bake those scenarios after `pnpm build`. `all` = every
# canonical scenario (1.1 GB × 6 ≈ 6.6 GB; minutes to bake). Default: empty
# (deploy ships only the client-WASM fallback path).
: "${DEPLOY_BAKE_SCENARIOS:=}"

cmd_bake_simcache() {
    # `./run bake:simcache [ids…]` — pre-compute sim-cache frames into dist/.
    # Pass scenario ids (space- or comma-separated) or the string `all`.
    # Used standalone (post-`pnpm build`) or invoked from cmd_deploy_guide_next.
    local scenarios="${1:-all}"; shift || true
    if [ "$scenarios" = "all" ]; then
        scenarios=""   # empty arg list = bake-simcache defaults to ALL_SCENARIO_IDS
    else
        scenarios="${scenarios//,/ }"
    fi
    if [ ! -d "$GUIDE_DIR/dist" ]; then
        echo -e "${RED}✗ $GUIDE_DIR/dist missing — run \`pnpm build\` first, then \`./run bake:simcache\`.${NC}"
        return 1
    fi
    echo -e "${BLUE}Baking sim-cache frames into $GUIDE_DIR/dist/__sim-cache/${NC}"
    # shellcheck disable=SC2086
    (cd "$GUIDE_DIR" && node --import tsx/esm tools/bake-simcache.ts $scenarios)
}

cmd_deploy_guide_next() {
    # Build the dev bundle (all EpisodeGate subtrees visible) + rsync to black.
    # Safe to run repeatedly — rsync --delete replaces the target dir with dist/.
    #
    # **Bake delegation**: when DEPLOY_BAKE_SCENARIOS is set AND this is NOT
    # already running on apricot, SSH-delegate the entire pipeline to apricot
    # so the heavy sim compute happens on the run host (CPU to spare, WASM
    # already built). Apricot pulls latest main from forge, then invokes this
    # same script there — which runs locally (no further delegation) and
    # rsyncs to black via apricot's `Host black` SSH config alias.

    local local_hostname
    local_hostname="$(hostname -s 2>/dev/null || hostname)"
    if [ -n "$DEPLOY_BAKE_SCENARIOS" ] && [ "$local_hostname" != "apricot" ]; then
        echo -e "${BLUE}[delegate] DEPLOY_BAKE_SCENARIOS=$DEPLOY_BAKE_SCENARIOS — offloading bake+deploy to $AUTOPLAY_HOST (apricot has processing power to spare)${NC}"
        if ! ssh -o ConnectTimeout=5 "$AUTOPLAY_HOST" "test -d $PROJECT_ROOT_REMOTE/.git" 2>/dev/null; then
            echo -e "${RED}✗ $AUTOPLAY_HOST:$PROJECT_ROOT_REMOTE is not a git clone — check PROJECT_ROOT_REMOTE in .env.${NC}"
            return 1
        fi
        ssh "$AUTOPLAY_HOST" "
            set -e
            cd $PROJECT_ROOT_REMOTE
            git fetch --prune origin
            git checkout main
            git reset --hard origin/main
            export DEPLOY_BAKE_SCENARIOS='$DEPLOY_BAKE_SCENARIOS'
            export NEXT_DEPLOY_HOST='${NEXT_DEPLOY_HOST:-black}'
            export NEXT_DEPLOY_PATH='$NEXT_DEPLOY_PATH'
            # Keep WASM fresh — apricot is the canonical build host.
            (cd src/simulator && bash build-wasm.sh)
            ./run deploy:guide:next
        "
        return $?
    fi

    # Prerequisite: WASM artifact present locally. The Vite build imports from
    # the @magic-civ/physics-rs alias which resolves to .local/build/wasm/.
    if [ ! -f "$REPO_ROOT/.local/build/wasm/magic_civ_physics.js" ]; then
        echo -e "${RED}✗ .local/build/wasm/magic_civ_physics.js missing — can't build guide.${NC}"
        echo -e "${RED}  Build locally:  (cd src/simulator && bash build-wasm.sh)${NC}"
        echo -e "${RED}  Or rsync from apricot:${NC}"
        echo -e "${RED}    rsync -a \"\$AUTOPLAY_HOST\":\"\$PROJECT_ROOT_REMOTE\"/.local/build/wasm/ .local/build/wasm/${NC}"
        return 1
    fi

    echo -e "${BLUE}[1/5] Building dev bundle (VITE_DEV_GUIDE=1 pnpm build)...${NC}"
    if ! (cd "$GUIDE_DIR" && VITE_DEV_GUIDE=1 pnpm build 2>&1); then
        echo -e "${RED}✗ pnpm build failed${NC}"
        return 1
    fi

    local dist="$GUIDE_DIR/dist"
    if [ ! -f "$dist/index.html" ]; then
        echo -e "${RED}✗ $dist/index.html not produced — build reported success but emitted no bundle.${NC}"
        return 1
    fi
    local size
    size="$(du -sh "$dist" | cut -f1)"
    echo -e "${GREEN}✓ dist/ ready ($size)${NC}"

    if [ -n "$DEPLOY_BAKE_SCENARIOS" ]; then
        echo -e "${BLUE}[2/5] Baking sim-cache scenarios: $DEPLOY_BAKE_SCENARIOS${NC}"
        if ! cmd_bake_simcache "$DEPLOY_BAKE_SCENARIOS"; then
            echo -e "${RED}✗ bake-simcache failed${NC}"
            return 1
        fi
        size="$(du -sh "$dist" | cut -f1)"
        echo -e "${GREEN}✓ dist/ with baked frames ($size)${NC}"
    else
        echo -e "${YELLOW}[2/5] DEPLOY_BAKE_SCENARIOS unset — skipping sim-cache bake (client-WASM fallback in browser).${NC}"
    fi

    echo -e "${BLUE}[3/5] Verifying SSH to $NEXT_DEPLOY_HOST...${NC}"
    if ! ssh -o ConnectTimeout=5 -o BatchMode=yes "$NEXT_DEPLOY_HOST" "test -d $NEXT_DEPLOY_PATH && echo ok" >/dev/null 2>&1; then
        echo -e "${RED}✗ can't reach $NEXT_DEPLOY_HOST:$NEXT_DEPLOY_PATH (VPN or permissions).${NC}"
        return 1
    fi
    echo -e "${GREEN}✓ reachable${NC}"

    echo -e "${BLUE}[4/5] Rsyncing dist/ → $NEXT_DEPLOY_HOST:$NEXT_DEPLOY_PATH${NC}"
    if ! rsync -az --delete "$dist/" "$NEXT_DEPLOY_HOST:$NEXT_DEPLOY_PATH"; then
        echo -e "${RED}✗ rsync failed${NC}"
        return 1
    fi
    echo -e "${GREEN}✓ deployed${NC}"

    echo -e "${BLUE}[5/5] Probing https://mc.next.black.local ...${NC}"
    local http_status
    http_status="$(curl -sk -o /dev/null -w "%{http_code}" --max-time 10 https://mc.next.black.local)"
    if [ "$http_status" = "200" ]; then
        echo -e "${GREEN}✓ https://mc.next.black.local → HTTP 200${NC}"
    else
        echo -e "${YELLOW}! https://mc.next.black.local → HTTP $http_status (expected 200)${NC}"
        echo -e "${YELLOW}  Deploy may still be correct; check the vhost config on $NEXT_DEPLOY_HOST.${NC}"
        return 1
    fi

    # MIME sanity: if the vhost's http{} block is missing `include mime.types;`
    # nginx serves .js as text/plain and browsers refuse to run the ES-module
    # shell (blank page, "disallowed MIME type" console errors). Catch that
    # regression here rather than on the next user load.
    local js_asset js_mime
    js_asset="$(ls "$dist"/assets/index-*.js 2>/dev/null | head -1)"
    if [ -n "$js_asset" ]; then
        js_mime="$(curl -sk --max-time 10 -o /dev/null -w '%{content_type}' "https://mc.next.black.local/assets/$(basename "$js_asset")")"
        case "$js_mime" in
            application/javascript*|text/javascript*)
                echo -e "${GREEN}✓ JS MIME: $js_mime${NC}" ;;
            *)
                echo -e "${RED}✗ JS asset served as '$js_mime' (expected application/javascript).${NC}"
                echo -e "${RED}  Add 'include /etc/nginx/mime.types; default_type application/octet-stream;' to the http{} block of /bigdisk/nginx/nginx.conf on $NEXT_DEPLOY_HOST, then:${NC}"
                echo -e "${RED}    docker exec host-nginx nginx -t && docker exec host-nginx nginx -s reload${NC}"
                return 1 ;;
        esac
    fi

    echo -e "${GREEN}Deployed dev guide to https://mc.next.black.local${NC}"
}