Initial version
This commit is contained in:
Jakub Zych
150
examples/stream.sh
Executable file
150
examples/stream.sh
Executable file
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#!/usr/bin/env bash
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# stream.sh — interactive pre-stream helper.
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#
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# ./stream.sh
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#
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# Prompts for game + title + countdown, resolves the game to a Twitch
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# category id via ../search-game.py, updates the channel via ../set-channel.py,
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# and writes stream.json next to this script for any overlay / starting-soon
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# timer / status page that wants to read the manifest.
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#
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# Re-running uses your previous answers as defaults — press Enter to keep them.
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#
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# Output path can be overridden with STREAM_JSON=/path/to/file.json ./stream.sh
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set -euo pipefail
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DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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BOT_DIR="$(cd "$DIR/.." && pwd)"
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JSON="${STREAM_JSON:-$DIR/stream.json}"
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SEARCH_GAME="$BOT_DIR/search-game.py"
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SET_CHANNEL="$BOT_DIR/set-channel.py"
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# Reads a top-level field from the previous stream.json. Always exits 0;
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# prints empty string if file/field is missing.
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prev() {
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[[ -f "$JSON" ]] || return 0
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python3 - "$JSON" "$1" <<'PY' 2>/dev/null || true
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import json, sys
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try:
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d = json.load(open(sys.argv[1]))
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v = d.get(sys.argv[2])
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print('' if v is None else v)
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except Exception:
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pass
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PY
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}
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ask() {
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# ask "question" "default" → echoes user input or default if blank
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local q="$1" def="${2:-}"
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local prompt=" $q"
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[[ -n "$def" ]] && prompt+=" [$def]"
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prompt+=": "
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local v
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read -rp "$prompt" v
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[[ -z "$v" && -n "$def" ]] && v="$def"
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printf '%s' "$v"
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}
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ask_int() {
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local v
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while :; do
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v=$(ask "$1" "${2:-}")
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[[ "$v" =~ ^[0-9]+$ ]] && { printf '%s' "$v"; return; }
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echo " ✗ must be a whole number" >&2
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done
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}
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sanitize() {
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printf '%s' "${1:-}" \
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| tr -d '"\\' \
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| tr '\n\r\t' ' ' \
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| sed 's/ */ /g; s/^ //; s/ $//'
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}
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emit_str() { [[ -z "${1:-}" ]] && printf 'null' || printf '"%s"' "$1"; }
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# ── Pull previous answers as defaults ───────────────
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prev_game=$(prev game)
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prev_game_id=$(prev gameId)
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prev_title=$(prev title)
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prev_count=$(prev countdownMin); [[ -z "$prev_count" ]] && prev_count="5"
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echo "── stream manifest ──"
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echo " (press Enter to keep [defaults])"
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echo
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# Resolve Game via Twitch search → exact directory entry. The picker prints
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# "<id>\t<name>" to stdout on success, or non-zero on no-match / cancel.
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# Re-running and accepting the previous game unchanged reuses the cached id
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# so we don't burn an API call to re-resolve a known answer.
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have_twitch=0
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[[ -x "$SEARCH_GAME" ]] && have_twitch=1
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game=""; game_id=""
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while :; do
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query=$(ask "Game (search)" "$prev_game")
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if [[ -z "$query" ]]; then
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echo " ✗ Game is required" >&2
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continue
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fi
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if (( have_twitch )); then
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# Reuse cached id only if it looks like a real Twitch numeric id. A past
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# bug (search-game.py prompt leaking into stdout) wrote "Pick: 506462"
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# here; the regex makes sure such corruption falls back to a fresh search
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# instead of getting passed straight to PATCH /helix/channels.
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if [[ -n "$prev_game_id" && "$query" == "$prev_game" && "$prev_game_id" =~ ^[0-9]+$ ]]; then
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game="$prev_game"; game_id="$prev_game_id"
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echo " ↻ reusing cached: $game (id=$game_id)"
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break
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fi
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if line=$("$SEARCH_GAME" "$query"); then
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IFS=$'\t' read -r game_id game <<<"$line"
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break
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fi
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# search-game.py already printed its own error; loop and re-ask
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else
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# no twitch helper available — accept the raw input, no id resolution
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game="$query"; game_id=""
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break
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fi
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done
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title=$(ask "Title (Twitch stream title)" "$prev_title")
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countdown=$(ask_int "Countdown (minutes)" "$prev_count")
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game=$(sanitize "$game")
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title=$(sanitize "$title")
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now_iso=$(date -u +%FT%TZ)
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tmp="$JSON.tmp.$$"
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cat > "$tmp" <<JSON
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{
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"compiledAt": "$now_iso",
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"game": $(emit_str "$game"),
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"gameId": $(emit_str "$game_id"),
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"title": $(emit_str "$title"),
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"countdownMin": $countdown
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}
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JSON
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if ! python3 -m json.tool "$tmp" >/dev/null 2>&1; then
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echo " ✗ produced invalid JSON, leaving $tmp for inspection" >&2
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exit 1
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fi
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mv -f "$tmp" "$JSON"
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echo
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echo " ✓ wrote $JSON"
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# ── Push to Twitch (game + title) via the broadcaster token ─────────────
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# Soft-fail: a Twitch hiccup must not block the local manifest from being
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# written — anything reading stream.json can still load offline.
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# Title falls back to the game name when the user left it blank.
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if (( have_twitch )) && [[ -x "$SET_CHANNEL" && -n "$game_id" ]]; then
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twitch_title="${title:-$game}"
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echo
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if ! "$SET_CHANNEL" --game-id "$game_id" "$twitch_title"; then
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echo " ! Twitch sync failed (manifest still saved) — fix and re-run if needed" >&2
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fi
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fi
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