#! /usr/bin/env nix-shell
#! nix-shell -i bash -p nix nix-prefetch-git gnutar curl jq

set -euo pipefail

cd "$(dirname "$(readlink -f "$0")")"

log() {
    tput bold
    echo "#" "$@"
    tput sgr0
}

alias curl='curl -s ${GITHUB_TOKEN:+-u ":$GITHUB_TOKEN"}'

log "Updating compatibility list..."
compatListRev="$(curl "https://api.github.com/repos/flathub/org.yuzu_emu.yuzu/commits/master" | jq -r '.sha')"

log "Downloading rev: ${compatListRev}"
compatListHash="$(nix-prefetch-url "https://raw.githubusercontent.com/flathub/org.yuzu_emu.yuzu/${compatListRev}/compatibility_list.json")"

log "Updating mainline..."
mainlineVersion="$(curl "https://api.github.com/repos/yuzu-emu/yuzu-mainline/releases?per_page=1" | jq -r '.[0].name' | cut -d" " -f2)"

log "Downloading version: ${mainlineVersion}"
mainlineHash="$(nix-prefetch-git --fetch-submodules --rev "mainline-0-${mainlineVersion}" "https://github.com/yuzu-emu/yuzu-mainline" | jq -r '.sha256')"

log "Updating early access..."
eaVersion="$(curl "https://api.github.com/repos/pineappleEA/pineapple-src/releases?per_page=1" | jq -r '.[0].tag_name' | cut -d"-" -f2)"

log "Downloading dist version: ${eaVersion}"
fetched="$(nix-prefetch-url --unpack --print-path "https://github.com/pineappleEA/pineapple-src/releases/download/EA-${eaVersion}/Windows-Yuzu-EA-${eaVersion}.zip")"

eaDistHash="$(echo "${fetched}" | head -n1)"
eaDist="$(echo "${fetched}" | tail -n1)"

eaDistUnpacked="$(mktemp -d)"
trap 'rm -rf "$eaDistUnpacked"' EXIT

log "Unpacking dist..."
tar xf "$eaDist"/*.tar.xz --directory="$eaDistUnpacked" --strip-components=1

log "Rehydrating..."
eaFullHash="$(nix-prefetch-git --fetch-submodules "$eaDistUnpacked" | jq -r '.sha256')"

cat >sources.nix <<EOF
# Generated by ./update.sh - do not update manually!
# Last updated: $(date +%F)
{
  compatList = {
    rev = "$compatListRev";
    hash = "sha256:$compatListHash";
  };

  mainline = {
    version = "$mainlineVersion";
    hash = "sha256:$mainlineHash";
  };

  ea = {
    version = "$eaVersion";
    distHash = "sha256:$eaDistHash";
    fullHash = "sha256:$eaFullHash";
  };
}
EOF