set shell := ["bash", "-cu"]
set dotenv-load := true

sanderling := env_var_or_default("SANDERLING", "sanderling")
avd        := env_var_or_default("AVD", "")
android_device := env_var_or_default("ANDROID_DEVICE", "")
duration   := env_var_or_default("DURATION", "1m")
seed       := env_var_or_default("SEED", "0")
output     := env_var_or_default("OUTPUT", justfile_directory() / "sanderling" / "runs")
ios_device := env_var_or_default("IOS_DEVICE", "")
ios_app    := justfile_directory() / "app" / "iosApp" / "build" / "Build" / "Products" / "Debug-iphonesimulator" / "iosApp.app"
ios_app_device := justfile_directory() / "app" / "iosApp" / "build" / "Build" / "Products" / "Debug-iphoneos" / "iosApp.app"
apk        := justfile_directory() / "app" / "androidApp" / "build" / "outputs" / "apk" / "debug" / "androidApp-debug.apk"

default:
    @just --list

# Resolve ANDROID_HOME from the env or a short list of canonical install
# locations, so Gradle can find the Android SDK without the user having to
# export anything.
_android-home:
    #!/usr/bin/env bash
    set -euo pipefail
    if [[ -n "${ANDROID_HOME:-}" && -d "$ANDROID_HOME" ]]; then
      echo "$ANDROID_HOME"; exit 0
    fi
    if [[ -n "${ANDROID_SDK_ROOT:-}" && -d "$ANDROID_SDK_ROOT" ]]; then
      echo "$ANDROID_SDK_ROOT"; exit 0
    fi
    for candidate in \
      "$HOME/Library/Android/sdk" \
      "$HOME/Android/Sdk" \
      "/opt/homebrew/share/android-commandlinetools" \
      "/usr/local/share/android-commandlinetools"; do
      if [[ -d "$candidate" ]]; then
        echo "$candidate"; exit 0
      fi
    done
    echo "could not locate Android SDK (set ANDROID_HOME)" >&2
    exit 1

# Ask which of a list of targets to act on. Callers set FOLIO_PICK_ITEMS to
# "value<TAB>label" lines and read one line back: "picked <value>", "cancelled"
# or "no-tty". The answer goes to stdout rather than an exit code so a caller
# reading it does not have to sieve just's own failure line out of the menu.
_pick header:
    #!/usr/bin/env bash
    set -euo pipefail
    if ! { exec 3</dev/tty; } 2>/dev/null; then
      echo "no-tty"
      exit 0
    fi
    values=()
    labels=()
    while IFS=$'\t' read -r value label; do
      [[ -n "$value" ]] || continue
      values+=("$value")
      labels+=("${label:-$value}")
    done <<<"$FOLIO_PICK_ITEMS"
    echo "{{header}}" >&2
    for i in "${!values[@]}"; do
      printf '  %d) %s\n' "$((i + 1))" "${labels[$i]}" >&2
    done
    while :; do
      printf 'folio: number (enter to cancel): ' >&2
      read -r -u 3 reply || break
      [[ -n "$reply" ]] || break
      if [[ "$reply" =~ ^[0-9]+$ ]] && (( reply >= 1 && reply <= ${#values[@]} )); then
        echo "picked ${values[$((reply - 1))]}"
        exit 0
      fi
      echo "folio: not one of the numbers above." >&2
    done
    echo "cancelled"

# Print where adb has been aimed when that is not this machine's default
# server, and nothing when it is. Read the way the adb CLI reads it, so the
# recipes that only ever guess at a local emulator can tell the difference.
_adb-server:
    #!/usr/bin/env bash
    set -euo pipefail
    if [[ -n "${ADB_SERVER_SOCKET:-}" ]]; then
      echo "${ADB_SERVER_SOCKET}"
    elif [[ -n "${ANDROID_ADB_SERVER_ADDRESS:-}${ANDROID_ADB_SERVER_PORT:-}" ]]; then
      echo "tcp:${ANDROID_ADB_SERVER_ADDRESS:-localhost}:${ANDROID_ADB_SERVER_PORT:-5037}"
    fi

# Ensure an Android device is online. If none is connected and no AVD is
# provided, boot the first AVD whose system image is actually installed
# (headless) and wait for it to finish booting. A remote adb server is left
# alone: an emulator booted here would never appear on it.
_ensure-device:
    #!/usr/bin/env bash
    set -euo pipefail
    sdk="$(just _android-home)"
    adb="$sdk/platform-tools/adb"
    if "$adb" devices | awk 'NR>1 && $2=="device"{f=1} END{exit !f}'; then
      exit 0
    fi
    server="$(just _adb-server)"
    if [[ -n "$server" ]]; then
      echo "no device is online on the adb server at $server, and an emulator booted here would not appear on it" >&2
      exit 1
    fi
    if [[ -n "{{avd}}" ]]; then
      exit 0  # sanderling boots the named AVD itself
    fi
    emulator="$sdk/emulator/emulator"
    avd=""
    for candidate in $("$emulator" -list-avds); do
      # The AVD directory is named in <name>.ini's path= field, which is not
      # always "<name>.avd" (e.g. Medium_Phone_API_36.0 -> Medium_Phone.avd).
      avddir="$(sed -n 's/^path=//p' "$HOME/.android/avd/$candidate.ini" 2>/dev/null || true)"
      [[ -n "$avddir" ]] || avddir="$HOME/.android/avd/$candidate.avd"
      sysdir="$(sed -n 's/^image\.sysdir\.1=//p' "$avddir/config.ini" 2>/dev/null || true)"
      if [[ -n "$sysdir" && -d "$sdk/$sysdir" ]]; then avd="$candidate"; break; fi
    done
    if [[ -z "$avd" ]]; then
      echo "no bootable AVD found (no installed system image); create one or set AVD=" >&2
      exit 1
    fi
    echo "booting emulator: $avd"
    ANDROID_SDK_ROOT="$sdk" ANDROID_HOME="$sdk" nohup "$emulator" -avd "$avd" \
      -no-window -no-snapshot -gpu swiftshader_indirect -no-audio >/tmp/folio-emulator.log 2>&1 &
    for _ in $(seq 1 150); do
      if [[ "$("$adb" shell getprop sys.boot_completed 2>/dev/null | tr -d '\r')" == "1" ]]; then
        echo "emulator ready"; exit 0
      fi
      sleep 2
    done
    echo "emulator did not finish booting in time (see /tmp/folio-emulator.log)" >&2
    exit 1

# Print the serial every device-affecting recipe must act on. A run installs
# the app, clears its state and fuzzes it, so the target is never inferred from
# "whatever adb resolved to": the one case it picks on its own is a single
# emulator on the local adb server, which is cheap to rebuild. Anything else is
# asked about when there is a terminal to ask on, and refused when there is not.
_require-device:
    #!/usr/bin/env bash
    set -euo pipefail
    adb="$(just _android-home)/platform-tools/adb"
    listing="$("$adb" devices -l)"
    online="$(echo "$listing" | awk 'NR>1 && $2=="device"{print $1}')"
    count="$(printf '%s' "$online" | grep -c . || true)"

    refuse() {
      cat >&2 <<EOF
    folio: $1

    $listing

    Set ANDROID_DEVICE to the serial to use, and ADB_SERVER_SOCKET when that adb
    server runs on another host. Either can live in examples/folio/.env:

      ANDROID_DEVICE=emulator-5554 just test
      ADB_SERVER_SOCKET=tcp:10.0.0.5:5037 ANDROID_DEVICE=emulator-5554 just test
    EOF
      exit 1
    }

    model_of() {
      printf '%s\n' "$listing" | awk -v serial="$1" '$1 == serial {
        for (i = 3; i <= NF; i++) if ($i ~ /^model:/) { sub(/^model:/, "", $i); print $i; exit }
      }'
    }

    if [[ -n "{{android_device}}" ]]; then
      if printf '%s\n' "$online" | grep -qxF "{{android_device}}"; then
        echo "{{android_device}}"
        exit 0
      fi
      refuse "ANDROID_DEVICE={{android_device}} is not an online device."
    fi
    if [[ "$count" -eq 0 ]]; then
      refuse "no device is online."
    fi
    if [[ -z "$(just _adb-server)" && "$count" -eq 1 && "$online" =~ ^emulator-[0-9]+$ ]]; then
      echo "$online"
      exit 0
    fi

    items="$(printf '%s\n' "$online" | while read -r serial; do
      [[ -n "$serial" ]] || continue
      model="$(model_of "$serial")"
      printf '%s\t%s%s\n' "$serial" "$serial" "${model:+  $model}"
    done)"
    answer="$(FOLIO_PICK_ITEMS="$items" just _pick "folio: a run installs the app, clears its state and drives it. Pick the device:")"
    case "$answer" in
      "picked "*)
        serial="${answer#picked }"
        echo "folio: using $serial (ANDROID_DEVICE=$serial in examples/folio/.env skips this)" >&2
        echo "$serial"
        exit 0
        ;;
      cancelled)
        echo "folio: cancelled." >&2
        exit 1
        ;;
    esac
    refuse "refusing to install on and fuzz a device nobody named, and there is no
    terminal here to ask on. A run installs the app, clears its state and drives
    it, so the only target it picks on its own is a single emulator on the local
    adb server."

# Run folio's own unit tests. Named test-unit because `test` is the fuzz run.
test-unit:
    #!/usr/bin/env bash
    set -euo pipefail
    export ANDROID_HOME="$(just _android-home)"
    ./gradlew :core:testDebugUnitTest :app:shared:testDebugUnitTest

# Build the folio debug APK without installing it.
build:
    #!/usr/bin/env bash
    set -euo pipefail
    export ANDROID_HOME="$(just _android-home)"
    ./gradlew :app:androidApp:assembleDebug

# Build and install the folio APK on a running emulator/device, on the serial
# given or the one picked by _require-device. Gradle only assembles: adb does
# the install because it reads ADB_SERVER_SOCKET, so the device may live on a
# remote adb server, which AGP's loopback-only client cannot reach.
install serial="": _ensure-device
    #!/usr/bin/env bash
    set -euo pipefail
    export ANDROID_HOME="$(just _android-home)"
    serial="{{serial}}"
    [[ -n "$serial" ]] || serial="$(just _require-device)"
    export ANDROID_SERIAL="$serial"
    ./gradlew :app:androidApp:assembleDebug
    "$ANDROID_HOME/platform-tools/adb" install -r "{{apk}}"

# Remove the folio APK from the connected device.
uninstall:
    #!/usr/bin/env bash
    set -euo pipefail
    export ANDROID_HOME="$(just _android-home)"
    serial="$(just _require-device)"
    export ANDROID_SERIAL="$serial"
    "$ANDROID_HOME/platform-tools/adb" uninstall app.folio

# Remove gradle + iOS build directories.
clean:
    #!/usr/bin/env bash
    set -euo pipefail
    export ANDROID_HOME="$(just _android-home)"
    ./gradlew clean
    rm -rf app/iosApp/build

# Print the UDID of the simulator the iOS recipes drive. IOS_DEVICE names it by
# name or UDID, matched against booted simulators before merely available ones,
# the way sanderling matches --ios-device. A UDID rather than a name because the
# same iPhone exists under every installed runtime, and a seed only means
# something against one of them. Without IOS_DEVICE, a lone booted simulator is
# the one case taken without asking.
_require-ios-device:
    #!/usr/bin/env bash
    set -euo pipefail
    rows="$(xcrun simctl list devices available | awk '
    /^-- / { runtime = $0; sub(/^-- /, "", runtime); sub(/ --$/, "", runtime); next }
    runtime ~ /^iOS/ && match($0, /\([0-9A-Fa-f]{8}-([0-9A-Fa-f]{4}-){3}[0-9A-Fa-f]{12}\)/) {
      name = substr($0, 1, RSTART - 1)
      gsub(/^[ \t]+|[ \t]+$/, "", name)
      state = substr($0, RSTART + RLENGTH)
      gsub(/[()[:space:]]/, "", state)
      printf "%s\t%s\t%s\t%s\n", substr($0, RSTART + 1, RLENGTH - 2), name, runtime, state
    }')"

    catalog() {
      printf '%s\n' "$rows" | awk -F'\t' 'NF { printf "  %s  (%s)  %s%s\n", $2, $3, $1, ($4 == "Booted" ? "  booted" : "") }'
    }

    refuse() {
      cat >&2 <<EOF
    folio: $1

    $(catalog)

    Set IOS_DEVICE to the simulator name or UDID to use. It can live in
    examples/folio/.env:

      IOS_DEVICE="iPhone 17 Pro" just test-ios
    EOF
      exit 1
    }

    if [[ -z "$rows" ]]; then
      echo "folio: no iOS simulator is available. Create one in Xcode, or see 'xcrun simctl list devices'." >&2
      exit 1
    fi

    if [[ -n "{{ios_device}}" ]]; then
      matches="$(printf '%s\n' "$rows" | awk -F'\t' -v want="{{ios_device}}" '$4 == "Booted" && ($1 == want || $2 == want)')"
      [[ -n "$matches" ]] || matches="$(printf '%s\n' "$rows" | awk -F'\t' -v want="{{ios_device}}" '$1 == want || $2 == want')"
      [[ -n "$matches" ]] || refuse "IOS_DEVICE={{ios_device}} is not an available simulator."
    else
      matches="$(printf '%s\n' "$rows" | awk -F'\t' '$4 == "Booted"')"
      [[ -n "$matches" ]] || matches="$rows"
    fi

    if [[ "$(printf '%s\n' "$matches" | grep -c .)" -eq 1 ]]; then
      printf '%s\n' "$matches" | cut -f1
      exit 0
    fi

    items="$(printf '%s\n' "$matches" | awk -F'\t' 'NF { printf "%s\t%s  (%s)  %s%s\n", $1, $2, $3, $1, ($4 == "Booted" ? "  booted" : "") }')"
    answer="$(FOLIO_PICK_ITEMS="$items" just _pick "folio: a run installs folio on the simulator, clears its state and drives it. Pick one:")"
    case "$answer" in
      "picked "*)
        udid="${answer#picked }"
        echo "folio: using $udid (IOS_DEVICE=$udid in examples/folio/.env skips this)" >&2
        echo "$udid"
        exit 0
        ;;
      cancelled)
        echo "folio: cancelled." >&2
        exit 1
        ;;
    esac
    refuse "more than one simulator answers to that, and there is no terminal here to ask on."

# Regenerate iosApp.xcodeproj from project.yml.
ios-gen:
    #!/usr/bin/env bash
    set -euo pipefail
    cd app/iosApp && xcodegen generate

# Build + install + launch on the simulator given, or the one folio settles on.
ios udid="":
    #!/usr/bin/env bash
    set -euo pipefail
    export ANDROID_HOME="$(just _android-home)"
    # Every step addresses this UDID rather than "booted", so the build, the
    # install and the launch cannot land on different simulators.
    udid="{{udid}}"
    [[ -n "$udid" ]] || udid="$(just _require-ios-device)"
    if ! xcrun simctl list devices booted | grep -q "$udid"; then
      xcrun simctl boot "$udid"
      open -a Simulator
      sleep 3
    fi
    just ios-gen
    xcodebuild -project app/iosApp/iosApp.xcodeproj -scheme iosApp \
      -destination "platform=iOS Simulator,id=$udid" \
      -derivedDataPath app/iosApp/build \
      build | tail -5
    # Installing over the top keeps the data container, and folio's signed-in
    # session with it, so a run started straight after would open on the last
    # run's Home screen instead of Login and diverge at step 1.
    xcrun simctl uninstall "$udid" app.folio || true
    xcrun simctl install "$udid" "{{ios_app}}"
    xcrun simctl launch "$udid" app.folio

# Build the folio app for a connected physical iOS device (signed via .env creds).
# Signing reads ASC_API_* and DEVELOPMENT_TEAM/SANDERLING_IOS_TEAM from .env;
# sanderling installs the build on the device per run via devicectl.
ios-device:
    #!/usr/bin/env bash
    set -euo pipefail
    export ANDROID_HOME="$(just _android-home)"
    just ios-gen
    xcodebuild -project app/iosApp/iosApp.xcodeproj -scheme iosApp \
      -destination 'generic/platform=iOS' \
      -derivedDataPath app/iosApp/build \
      -allowProvisioningUpdates \
      -authenticationKeyPath "$ASC_API_KEY_PATH" \
      -authenticationKeyID "$ASC_API_KEY_ID" \
      -authenticationKeyIssuerID "$ASC_API_ISSUER_ID" \
      CODE_SIGN_STYLE=Automatic \
      DEVELOPMENT_TEAM="${SANDERLING_IOS_TEAM:-${DEVELOPMENT_TEAM:-}}" \
      build | tail -5

# Run 'sanderling test' against the folio app. Uses a connected device if one is
# online; otherwise boots AVD=<name> when provided, or auto-boots a bootable AVD.
# Installs before it runs so the run always fuzzes the current build, matching
# test-ios which rebuilds and reinstalls the app first.
test: _ensure-device
    #!/usr/bin/env bash
    set -euo pipefail
    serial="$(just _require-device)"
    just install "$serial"
    device_flag=(--device "$serial")
    if [[ -n "{{avd}}" ]]; then
      device_flag+=(--avd "{{avd}}")
    fi
    "{{sanderling}}" test \
      --spec "{{justfile_directory()}}/sanderling/spec.ts" \
      --bundle-id app.folio \
      "${device_flag[@]}" \
      --android-app-path "{{apk}}" \
      --duration "{{duration}}" \
      --seed "{{seed}}" \
      --output "{{output}}"

# Run 'sanderling test' with the LLM action generator instead of the seeded
# fuzzer. Needs OPENROUTER_API_KEY (or OPENAI_API_KEY) in the environment; the
# model is configured by generator = llm({...}) in spec.ts.
test-llm: _ensure-device
    #!/usr/bin/env bash
    set -euo pipefail
    serial="$(just _require-device)"
    just install "$serial"
    device_flag=(--device "$serial")
    if [[ -n "{{avd}}" ]]; then
      device_flag+=(--avd "{{avd}}")
    fi
    "{{sanderling}}" test \
      --spec "{{justfile_directory()}}/sanderling/spec.ts" \
      --bundle-id app.folio \
      --generator llm \
      "${device_flag[@]}" \
      --android-app-path "{{apk}}" \
      --duration "{{duration}}" \
      --seed "{{seed}}" \
      --output "{{output}}"

# Serve the wasmJs web app from a webpack dev server with COOP/COEP headers.
web:
    #!/usr/bin/env bash
    set -euo pipefail
    export ANDROID_HOME="$(just _android-home)"
    ./gradlew :app:webApp:wasmJsBrowserDevelopmentRun --continuous

# Produce a webpack distributable bundle for the web app.
web-build:
    #!/usr/bin/env bash
    set -euo pipefail
    export ANDROID_HOME="$(just _android-home)"
    ./gradlew :app:webApp:wasmJsBrowserDevelopmentExecutableDistribution

# Build + install + run sanderling spec on iOS simulator.
test-ios:
    #!/usr/bin/env bash
    set -euo pipefail
    udid="$(just _require-ios-device)"
    just ios "$udid"
    "{{sanderling}}" test \
      --platform ios \
      --spec "{{justfile_directory()}}/sanderling/spec.ts" \
      --bundle-id app.folio \
      --ios-app-path "{{ios_app}}" \
      --ios-device "$udid" \
      --duration "{{duration}}" \
      --seed "{{seed}}" \
      --output "{{output}}"

# Requires App Store Connect signing creds in .env and IOS_DEVICE set to the
# connected device's name (or UDID / CoreDevice id).
# Build + install + run sanderling spec on a connected physical iOS device.
test-ios-device:
    #!/usr/bin/env bash
    set -euo pipefail
    if [[ -z "{{ios_device}}" ]]; then
      echo "folio: set IOS_DEVICE to the connected device's name, UDID or CoreDevice id (see 'xcrun devicectl list devices'). Left empty, sanderling resolves a booted simulator and fuzzes that instead." >&2
      exit 1
    fi
    just ios-device
    "{{sanderling}}" test \
      --platform ios \
      --spec "{{justfile_directory()}}/sanderling/spec.ts" \
      --bundle-id app.folio \
      --ios-app-path "{{ios_app_device}}" \
      --ios-device "{{ios_device}}" \
      --duration "{{duration}}" \
      --seed "{{seed}}" \
      --output "{{output}}"