# Usage: scoop install <app> [options]
# Summary: Install apps
# Help: e.g. The usual way to install an app (uses your local 'buckets'):
#      scoop install git
#
# To install an app from a manifest at a URL:
#      scoop install https://raw.github.com/lukesampson/scoop/master/bucket/runat.json
#
# To install an app from a manifest on your computer
#      scoop install \path\to\app.json
#
# When installing from your computer, you can leave the .json extension off if you like.
#
# Options:
#   -g, --global              Install the app globally
#   -i, --independent         Don't install dependencies automatically
#   -k, --no-cache            Don't use the download cache
#   -s, --skip                Skip hash validation (use with caution!)
#   -a, --arch <32bit|64bit>  Use the specified architecture, if the app supports it

. "$psscriptroot\..\lib\core.ps1"
. "$psscriptroot\..\lib\manifest.ps1"
. "$psscriptroot\..\lib\buckets.ps1"
. "$psscriptroot\..\lib\decompress.ps1"
. "$psscriptroot\..\lib\install.ps1"
. "$psscriptroot\..\lib\shortcuts.ps1"
. "$psscriptroot\..\lib\psmodules.ps1"
. "$psscriptroot\..\lib\versions.ps1"
. "$psscriptroot\..\lib\help.ps1"
. "$psscriptroot\..\lib\getopt.ps1"
. "$psscriptroot\..\lib\depends.ps1"
. "$psscriptroot\..\lib\config.ps1"

reset_aliases

function is_installed($app, $global) {
    if(installed $app $global) {
        function gf($g) { if($g) { ' --global' } }

        $version = @(versions $app $global)[-1]
        if(!(install_info $app $version $global)) {
            error "It looks like a previous installation of $app failed.`nRun 'scoop uninstall $app$(gf $global)' before retrying the install."
        }
        warn "'$app' ($version) is already installed.`nUse 'scoop update $app$(gf $global)' to install a new version."
        return $true
    }
    return $false
}

$opt, $apps, $err = getopt $args 'gfiksa:' 'global', 'force', 'independent', 'no-cache', 'skip', 'arch='
if($err) { "scoop install: $err"; exit 1 }

$global = $opt.g -or $opt.global
$check_hash = !($opt.s -or $opt.skip)
$independent = $opt.i -or $opt.independent
$use_cache = !($opt.k -or $opt.'no-cache')
$architecture = default_architecture
try {
    $architecture = ensure_architecture ($opt.a + $opt.arch)
} catch {
    abort "ERROR: $_"
}

if(!$apps) { error '<app> missing'; my_usage; exit 1 }

if($global -and !(is_admin)) {
    abort 'ERROR: you need admin rights to install global apps'
}

if(is_scoop_outdated) {
    scoop update
}

if($apps.length -eq 1) {
    $app, $null, $null = parse_app $apps
    if(is_installed $app $global) {
        return
    }
}

# get any specific versions that we need to handle first
$specific_versions = $apps | Where-Object {
    $null, $null, $version = parse_app $_
    return $null -ne $version
}

# compare object does not like nulls
if ($specific_versions.length -gt 0) {
    $difference = Compare-Object -ReferenceObject $apps -DifferenceObject $specific_versions -PassThru
} else {
    $difference = $apps
}

$specific_versions_paths = $specific_versions | ForEach-Object {
    $app, $bucket, $version = parse_app $_
    if (installed_manifest $app $version) {
        abort "'$app' ($version) is already installed.`nUse 'scoop update $app$global_flag' to install a new version."
    }

    generate_user_manifest $app $bucket $version
}
$apps = @(($specific_versions_paths + $difference) | Where-Object { $_ } | Sort-Object -Unique)

# remember which were explictly requested so that we can
# differentiate after dependencies are added
$explicit_apps = $apps

if(!$independent) {
    $apps = install_order $apps $architecture # adds dependencies
}
ensure_none_failed $apps $global

$apps, $skip = prune_installed $apps $global

$skip | Where-Object { $explicit_apps -contains $_} | ForEach-Object {
    $app, $null, $null = parse_app $_
    $version = @(versions $app $global)[-1]
    warn "'$app' ($version) is already installed. Skipping."
}

$suggested = @{};
$apps | ForEach-Object { install_app $_ $architecture $global $suggested $use_cache $check_hash }

show_suggestions $suggested

exit 0