<#
.SYNOPSIS
    Importiert das Bollwerk-Vorratsinventar in den Server (einmaliger PUT).
    Verwendet App-Default-Kategorien (IDs 1-7) und Default-Location Keller (ID 1).
.PARAMETER BaseUrl
    Server-URL. Standard: https://bollwerk.online
.PARAMETER AdminUser
    Admin-Benutzername. Standard: admin
.EXAMPLE
    .\import-inventar.ps1
    .\import-inventar.ps1 -BaseUrl "http://localhost:8080"
#>
param(
    [string]$BaseUrl = "https://bollwerk.online",
    [string]$AdminUser = "admin"
)

$ErrorActionPreference = "Stop"

# ---------------------------------------------------------------------------
# Umlaute via [char] - PS 5.1 liest .ps1-Dateien als ANSI/CP1252.
# UTF-8-Umlaute im Quelltext wuerden den Parser brechen (byte 0xB6 = Pilcrow).
# ---------------------------------------------------------------------------
$oe = [char]246   # o-Umlaut
$ue = [char]252   # u-Umlaut
$ae = [char]228   # a-Umlaut
$ss = [char]223   # scharfes S
$ag = [char]224   # a-grave (fuer "a 2300 kcal", "a 20 ml")

# ---------------------------------------------------------------------------
# Passwort sicher einlesen (erscheint NICHT in der History)
# ---------------------------------------------------------------------------
$secure = Read-Host "Admin-Passwort fuer '$AdminUser' @ $BaseUrl" -AsSecureString
$AdminPassword = [Runtime.InteropServices.Marshal]::PtrToStringAuto(
    [Runtime.InteropServices.Marshal]::SecureStringToBSTR($secure)
)

# ---------------------------------------------------------------------------
# HTTP-Hilfsfunktion (identisch mit run-integration-tests.ps1 – UTF-8-safe)
# ---------------------------------------------------------------------------
function Invoke-Api {
    param(
        [string]$Method,
        [string]$Path,
        [object]$Body = $null,
        [string]$Token = $null
    )
    $headers = @{ "Content-Type" = "application/json" }
    if ($Token) { $headers["Authorization"] = "Bearer $Token" }
    $bodyJson = if ($Body) { $Body | ConvertTo-Json -Depth 10 -Compress } else { $null }
    if ($bodyJson) {
        $sb = [System.Text.StringBuilder]::new($bodyJson.Length * 2)
        foreach ($ch in $bodyJson.ToCharArray()) {
            if ([int]$ch -gt 127) { [void]$sb.Append('\u{0:x4}' -f [int]$ch) }
            else { [void]$sb.Append($ch) }
        }
        $bodyJson = $sb.ToString()
    }
    $response = Invoke-RestMethod -Method $Method -Uri "$BaseUrl$Path" `
        -Body $bodyJson -Headers $headers -ErrorAction Stop
    return $response
}

# ---------------------------------------------------------------------------
# 1. Login
# ---------------------------------------------------------------------------
Write-Host "Logge ein als '$AdminUser'..." -ForegroundColor Cyan
$auth = Invoke-Api -Method POST -Path "/api/auth/login" -Body @{
    username = $AdminUser
    password = $AdminPassword
}
$token = $auth.accessToken
Write-Host "  Token erhalten." -ForegroundColor Green

# ---------------------------------------------------------------------------
# 2. Vorhandenes Inventar pruefen
# ---------------------------------------------------------------------------
Write-Host "Pruefe vorhandenes Inventar..." -ForegroundColor Cyan
$existing = Invoke-Api -Method GET -Path "/api/inventory" -Token $token
if ($existing.items.Count -gt 0) {
    Write-Host ""
    Write-Host "  WARNUNG: Das Inventar enthaelt bereits $($existing.items.Count) Artikel!" -ForegroundColor Yellow
    $confirm = Read-Host "  Ueberschreiben? (ja/nein)"
    if ($confirm -ne "ja") {
        Write-Host "Abgebrochen." -ForegroundColor Red
        exit 1
    }
}

# ---------------------------------------------------------------------------
# 3. Inventar-Daten definieren (aus inventar.md, Stand Mai 2026)
# ---------------------------------------------------------------------------
$now = [DateTimeOffset]::UtcNow.ToUnixTimeMilliseconds()
function NewItem($name, $catId, $qty, $unit, $expiry, $kcal, $notes) {
    @{
        id          = [System.Guid]::NewGuid().ToString()
        name        = $name
        categoryId  = $catId
        quantity    = [double]$qty
        unit        = $unit
        unitPrice   = 0.0
        kcalPerUnit = $kcal
        expiryDate  = $expiry
        locationId  = 1
        notes       = if ($notes) { $notes } else { "" }
        lastUpdated = $now
    }
}

# App-Default-Kategorien (IDs aus SeedDatabaseUseCase)
$categories = @(
    @{ id = 1; name = "Lebensmittel" }
    @{ id = 2; name = "Wasser" }
    @{ id = 3; name = "Medikamente" }
    @{ id = 4; name = "Ausr${ue}stung" }
    @{ id = 5; name = "Hygiene" }
    @{ id = 6; name = "Energie & Licht" }
    @{ id = 7; name = "Dokumente" }
)

# App-Default-Lagerort
$locations = @(
    @{ id = 1; name = "Keller" }
)

$items = @(
    # -- Lebensmittel: Getreide & Huelsenfruechte (cat 1) --------------------
    NewItem "Dinkelkorn"                             1  16   "Beutel"       $null   $null  "Jahrgang 2019, vakuumiert"
    NewItem "Weizen (Naturland)"                     1  36   "kg"           $null   $null  "Jahrgang 2023"
    NewItem "Dinkel"                                 1  40   "kg"           $null   $null  "Jahrgang 2023"
    NewItem "Bio-Weizen"                             1  18   "kg"           $null   $null  "Jahrgang 2019"
    NewItem "Bio-Weizen (Neu)"                       1 200   "kg"           $null   $null  "Jahrgang 05/2026, Kunststoffbehaelter, O2-Absorber, Trockenmittel, lose luftdicht"
    NewItem "Gr${ue}ne Erbsen"                       1  10   "kg"           $null   $null  "Jahrgang 2019"
    NewItem "Gelbe Sch${ae}lerbsen"                  1  10   "kg"           $null   $null  "Jahrgang 2019"
    NewItem "Berglinsen (1 kg)"                      1   1   "Pkg."   "2021-12-31"   $null  "MHD abgelaufen"
    NewItem "Berglinsen (500 g)"                     1   4   "Pkg."   "2023-12-31"   $null  "MHD abgelaufen"
    NewItem "Wei${ss}e Bohnen"                       1   2   "Pkg."   "2022-12-31"   $null  "MHD abgelaufen"
    NewItem "Jodsalz"                                1  25   "kg"           $null   $null  ""

    # -- Lebensmittel: Konserven (cat 1) -------------------------------------
    NewItem "Kondensmilch gezuckert (Dovgan)"        1  88   "Dosen"        $null   $null  "MHD pruefen"
    NewItem "Corned Beef (Exeter)"                   1  48   "Dosen"        $null   $null  "MHD pruefen"
    NewItem "Gesch${ae}lte Tomaten"                  1   5   "Dosen"        $null   $null  "2x 2,5 kg, MHD abgelaufen"
    NewItem "Tomatenmark (200 g)"                    1  24   "Dosen"        $null   $null  "MHD abgelaufen"
    NewItem "Sardinen"                               1   5   "Dosen"        $null   $null  "MHD abgelaufen"
    NewItem "Heringsfilet in Tomatenso${ss}e"        1  11   "Dosen"        $null   $null  "MHD abgelaufen"
    NewItem "Thunfisch gro${ss} (900 g)"             1   3   "Dosen"        $null   $null  "MHD abgelaufen"
    NewItem "Thunfisch klein"                        1   9   "Dosen"        $null   $null  "MHD abgelaufen"
    NewItem "Brathering Filet"                       1   2   "Dosen"        $null   $null  "MHD abgelaufen"
    NewItem "Dosenbrot"                              1   6   "Dosen"        $null   $null  "MHD abgelaufen"

    # -- Lebensmittel: Oele & Fette (cat 1) ----------------------------------
    NewItem "Oliven${oe}l (750 ml)"                  1   3   "Flaschen" "2022-12-31" $null  "MHD abgelaufen"
    NewItem "Avocado${oe}l (250 ml)"                 1   3   "Flaschen" "2026-12-31" $null  "MHD 2026, pruefen"
    NewItem "Sonnenblumen${oe}l (1 L)"               1   3   "Flaschen" "2021-12-31" $null  "MHD abgelaufen"
    NewItem "Sonnenblumen${oe}l (500 ml)"            1   1   "Flaschen" "2023-12-31" $null  "MHD abgelaufen"

    # -- Lebensmittel: Getraenke (cat 1) -------------------------------------
    NewItem "Instant-Kaffee"                         1  12   "Stk."     "2024-12-31" $null  "MHD abgelaufen"
    NewItem "Trek'N'Eat Peronin"                     1   8   "Stk."     "2024-12-31" $null  "MHD abgelaufen"

    # -- Lebensmittel: Notfallrationen (cat 1) --------------------------------
    NewItem "Conserva-Set"                           1  30   "Manntage"     $null   2300  "${ag} 2300 kcal/Tag, conserva.de"
    NewItem "NRG-5 Katadyn (Neubestand)"             1  96   "Tagesrationen" "2036-04-30" 2300 "4x24, Produktion April 2026"
    NewItem "NRG-5 Katadyn (Altbestand)"             1  19   "Tagesrationen" "2029-01-31" 2300 "Produktion 2019, 5 Rationen verbraucht"

    # -- Medikamente (cat 3) -------------------------------------------------
    NewItem "Vitamine"                               3 960   "Stk."         $null   $null  "3x240 + 2x120 Tabletten"

    # -- Ausruestung (cat 4) -------------------------------------------------
    NewItem "PMR-Funkger${ae}t (Midland G9 Pro)"     4   2   "Stk."         $null   $null  ""

    # -- Hygiene (cat 5) -----------------------------------------------------
    NewItem "Shampoo Mini"                           5  50   "Stk."         $null   $null  "${ag} 20 ml"
    NewItem "Ethanol"                                5  30   "Liter"        $null   $null  ""
    NewItem "Isopropanol"                            5   4   "Liter"        $null   $null  ""
    NewItem "Methanol"                               5   1   "Liter"        $null   $null  ""
    NewItem "Desinfektionsmittel"                    5   5   "Liter"        $null   $null  ""

    # -- Energie & Licht (cat 6) ---------------------------------------------
    NewItem "Petroleum"                              6  50   "Liter"        $null   $null  ""
)

$inventory = @{
    version        = 1
    categories     = $categories
    locations      = $locations
    items          = $items
    settings       = @()
    deletedItemIds = @()
}

# ---------------------------------------------------------------------------
# 4. PUT /api/inventory
# ---------------------------------------------------------------------------
Write-Host "Lade $($items.Count) Artikel in $($categories.Count) Kategorien hoch..." -ForegroundColor Cyan
$result = Invoke-Api -Method PUT -Path "/api/inventory" -Body $inventory -Token $token

Write-Host ""
Write-Host "Fertig!" -ForegroundColor Green
Write-Host "  Artikel hochgeladen : $($result.items.Count)"
Write-Host "  Kategorien          : $($result.categories.Count)"
Write-Host "  Lagerorte           : $($result.locations.Count)"