#!/usr/bin/env bash
# Oak Video Editor - Non-Linear Video Editor
# Copyright (C) 2026 Oak Team
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

# Installs the system dependencies of the Oak Rust workspace:
# the free-license external codec/filter libraries FFmpeg is configured
# with (see crates/oakcodec/Cargo.toml), plus the build tools. FFmpeg
# itself is built from source by cargo (ffmpeg-next `build` feature) and
# is NOT installed here.
#
# Supported: Homebrew (macOS), MSYS2 UCRT64 (Windows), Debian/Ubuntu,
# Fedora, Arch. Run it yourself — nothing in the build invokes it
# automatically (it needs sudo on Linux).
#
# Usage: tooling/install-deps.sh

set -euo pipefail

run() { echo "+ $*"; "$@"; }

if [[ "$OSTYPE" == msys* || "$OSTYPE" == cygwin* || -n "${MSYSTEM:-}" ]]; then
	if [ "${MSYSTEM:-}" != "UCRT64" ]; then
		echo "Please run this from the MSYS2 UCRT64 shell (MSYSTEM=$MSYSTEM)." >&2
		exit 1
	fi
	# Pacman mirrors occasionally stall mid-download (CI hits "Operation
	# too slow" on .sig retrieval); retry the whole install a few times —
	# --needed makes each retry resume where the last one stopped.
	for attempt in 1 2 3; do
		if run pacman -S --needed --noconfirm \
			make diffutils \
			mingw-w64-ucrt-x86_64-toolchain mingw-w64-ucrt-x86_64-pkgconf \
			mingw-w64-ucrt-x86_64-nasm \
			mingw-w64-ucrt-x86_64-x264 mingw-w64-ucrt-x86_64-x265 \
			mingw-w64-ucrt-x86_64-dav1d mingw-w64-ucrt-x86_64-libvpx \
			mingw-w64-ucrt-x86_64-openh264 mingw-w64-ucrt-x86_64-openjpeg2 \
			mingw-w64-ucrt-x86_64-libtheora mingw-w64-ucrt-x86_64-libwebp \
			mingw-w64-ucrt-x86_64-lame mingw-w64-ucrt-x86_64-opus \
			mingw-w64-ucrt-x86_64-libvorbis mingw-w64-ucrt-x86_64-speex \
			mingw-w64-ucrt-x86_64-snappy mingw-w64-ucrt-x86_64-libass \
			mingw-w64-ucrt-x86_64-freetype mingw-w64-ucrt-x86_64-fribidi \
			mingw-w64-ucrt-x86_64-fontconfig mingw-w64-ucrt-x86_64-gnutls
		then
			exit 0
		fi
		echo "pacman install attempt $attempt failed; retrying" >&2
		sleep 5
	done
	echo "pacman install failed after 3 attempts" >&2
	exit 1
fi

case "$(uname -s)" in
	Darwin)
		run brew install pkg-config nasm \
			x264 x265 dav1d libvpx openh264 openjpeg theora webp \
			lame opus libvorbis speex snappy libass freetype fribidi \
			fontconfig gnutls
		;;
	Linux)
		if command -v apt-get >/dev/null; then
			run sudo apt-get update
			run sudo apt-get install -y build-essential pkg-config nasm \
				libx264-dev libx265-dev libdav1d-dev libvpx-dev \
				libopenh264-dev libopenjp2-7-dev libtheora-dev libwebp-dev \
				libmp3lame-dev libopus-dev libvorbis-dev libspeex-dev \
				libsnappy-dev libass-dev libfreetype-dev libfribidi-dev \
				libfontconfig-dev libgnutls28-dev
		elif command -v dnf >/dev/null; then
			run sudo dnf install -y gcc gcc-c++ pkgconf-pkg-config nasm \
				x264-devel x265-devel dav1d-devel libvpx-devel \
				openh264-devel openjpeg2-devel libtheora-devel libwebp-devel \
				lame-devel opus-devel libvorbis-devel speex-devel \
				snappy-devel libass-devel freetype-devel fribidi-devel \
				fontconfig-devel gnutls-devel
		elif command -v pacman >/dev/null; then
			run sudo pacman -S --needed --noconfirm base-devel pkgconf nasm \
				x264 x265 dav1d libvpx openh264 openjpeg2 libtheora libwebp \
				lame opus libvorbis speex snappy libass freetype2 fribidi \
				fontconfig gnutls
		else
			echo "Unsupported Linux distribution (need apt-get, dnf or pacman)." >&2
			exit 1
		fi
		;;
	*)
		echo "Unsupported platform: $(uname -s)" >&2
		exit 1
		;;
esac

echo "Done. 'cargo build' now compiles FFmpeg 8.1 from source with these libraries."