# FuelLog API smoke test (UTF-8 with BOM)
# Usage: powershell -ExecutionPolicy Bypass -File scripts/smoke.ps1

$ErrorActionPreference = 'Stop'
$base = 'http://127.0.0.1:8080'

function Step($name, $scriptBlock) {
    Write-Host ''
    Write-Host "=== $name ===" -ForegroundColor Cyan
    & $scriptBlock
}

function Hit($method, $path, $body) {
    $params = @{
        Uri = "$base$path"
        Method = $method
        UseBasicParsing = $true
        ContentType = 'application/json'
    }
    if ($null -ne $body) { $params.Body = (ConvertTo-Json -InputObject $body -Depth 10) }
    try {
        $r = Invoke-WebRequest @params -TimeoutSec 10
        return @{ Status = [int]$r.StatusCode; Body = $r.Content }
    } catch {
        $resp = $_.Exception.Response
        if ($resp) {
            $stream = $resp.GetResponseStream()
            $reader = New-Object System.IO.StreamReader($stream)
            return @{ Status = [int]$resp.StatusCode; Body = $reader.ReadToEnd() }
        }
        throw
    }
}

function Check($label, $actual, $expected) {
    if ($actual -eq $expected) {
        Write-Host "  OK ${label} = $actual" -ForegroundColor Green
    } else {
        Write-Host "  FAIL ${label}: expected $expected, got $actual" -ForegroundColor Red
        exit 1
    }
}

# 1) health
Step 'health' {
    $r = Hit GET '/health' $null
    Check 'status' $r.Status 200
    Write-Host "  body: $($r.Body)"
}

# 2) list (counted, not asserted empty -- DB may carry data from prior runs)
Step 'list vehicles' {
    $r = Hit GET '/api/vehicles' $null
    Check 'status' $r.Status 200
    $list = $r.Body | ConvertFrom-Json
    Write-Host "  initial count = $($list.Count) (may be > 0 from prior runs)"
}

# 3) create vehicle
$vehicle = $null
Step 'create vehicle' {
    $body = @{
        name = 'My Car'
        brand = 'BYD'
        model = 'Qin PLUS DM-i'
        plate_number = 'Jing-A12345'
        fuel_type = 'hybrid'
        tank_capacity = 48
        current_odometer = 10000
        default_vehicle = $true
    }
    $r = Hit POST '/api/vehicles' $body
    Check 'status' $r.Status 200
    $v = $r.Body | ConvertFrom-Json
    $script:vehicle = $v
    Write-Host "  id=$($v.id) name=$($v.name) default=$($v.default_vehicle)"
}

# 4) verify created vehicle shows up in list
Step 'list contains new vehicle' {
    $r = Hit GET '/api/vehicles' $null
    Check 'status' $r.Status 200
    $list = $r.Body | ConvertFrom-Json
    $found = $list | Where-Object { $_.id -eq $vehicle.id }
    if (-not $found) { Write-Host "  FAIL: new vehicle not in list"; exit 1 }
    Write-Host "  OK new vehicle id=$($vehicle.id) found in list of $($list.Count)"
}

# 5) refuel #1 (full)
$refuel1 = $null
Step 'refuel #1 (full)' {
    $body = @{
        vehicle_id = $vehicle.id
        refuel_time = '2025-08-25T10:00:00+08:00'
        odometer = 10500
        fuel_type = 'hybrid'
        liters = 40
        total_amount = 320
        station_name = 'Sinopec Wangjing'
        is_full = $true
        remark = 'first full'
    }
    $r = Hit POST '/api/refuels' $body
    Check 'status' $r.Status 200
    $rec = $r.Body | ConvertFrom-Json
    $script:refuel1 = $rec
    Write-Host "  price_per_liter = $($rec.price_per_liter) (expect 8.0)"
    if ([math]::Abs([double]$rec.price_per_liter - 8.0) -gt 0.001) { Write-Host 'FAIL price'; exit 1 }
}

# 6) refuel #2 (full)
$refuel2 = $null
Step 'refuel #2 (full)' {
    $body = @{
        vehicle_id = $vehicle.id
        refuel_time = '2025-09-10T10:00:00+08:00'
        odometer = 11000
        fuel_type = 'hybrid'
        liters = 32
        total_amount = 256
        station_name = 'Sinopec Wangjing'
        is_full = $true
    }
    $r = Hit POST '/api/refuels' $body
    Check 'status' $r.Status 200
    $rec = $r.Body | ConvertFrom-Json
    $script:refuel2 = $rec
    Write-Host "  price_per_liter = $($rec.price_per_liter) (expect 8.0)"
}

# 7) refuel #3 (half - should NOT affect avg consumption)
Step 'refuel #3 (half)' {
    $body = @{
        vehicle_id = $vehicle.id
        refuel_time = '2025-09-15T10:00:00+08:00'
        odometer = 11200
        fuel_type = 'hybrid'
        liters = 10
        total_amount = 80
        station_name = 'Sinopec Wangjing'
        is_full = $false
    }
    $r = Hit POST '/api/refuels' $body
    Check 'status' $r.Status 200
}

# 8) statistics
Step 'statistics' {
    $r = Hit GET "/api/vehicles/$($vehicle.id)/statistics" $null
    Check 'status' $r.Status 200
    $s = $r.Body | ConvertFrom-Json
    Write-Host "  total_records = $($s.total_records) (expect 3)"
    Write-Host "  total_liters = $($s.total_liters) (expect 82)"
    Write-Host "  total_amount = $($s.total_amount) (expect 656)"
    Write-Host "  avg_price = $($s.avg_price) (expect ~8.0)"
    Write-Host "  avg_consumption = $($s.avg_consumption) (expect ~6.4 = 32/500*100)"
    Write-Host "  cost_per_km = $($s.cost_per_km) (expect ~0.512 = 256/500)"
    if ($s.total_records -ne 3) { Write-Host 'FAIL count'; exit 1 }
    if ([math]::Abs([double]$s.total_liters - 82) -gt 0.5) { Write-Host 'FAIL liters'; exit 1 }
    if ([math]::Abs([double]$s.total_amount - 656) -gt 0.5) { Write-Host 'FAIL amount'; exit 1 }
    if ([math]::Abs([double]$s.avg_price - 8.0) -gt 0.1) { Write-Host 'FAIL avg_price'; exit 1 }
    if ([math]::Abs([double]$s.avg_consumption - 6.4) -gt 0.5) { Write-Host 'FAIL consumption'; exit 1 }
    if ([math]::Abs([double]$s.cost_per_km - 0.512) -gt 0.05) { Write-Host 'FAIL cost_per_km'; exit 1 }
}

# 9) list refuels
Step 'list refuels' {
    $r = Hit GET "/api/refuels?vehicle_id=$($vehicle.id)" $null
    Check 'status' $r.Status 200
    $list = $r.Body | ConvertFrom-Json
    Write-Host "  count = $($list.Count) (expect 3)"
    if ($list.Count -ne 3) { Write-Host 'FAIL count'; exit 1 }
}

# 10) delete refuel
Step 'delete refuel #1' {
    $r = Hit DELETE "/api/refuels/$($refuel1.id)" $null
    Check 'status' $r.Status 204
}

# 11) statistics after delete
Step 'statistics after delete' {
    $r = Hit GET "/api/vehicles/$($vehicle.id)/statistics" $null
    Check 'status' $r.Status 200
    $s = $r.Body | ConvertFrom-Json
    Write-Host "  total_records = $($s.total_records) (expect 2)"
    if ($s.total_records -ne 2) { Write-Host 'FAIL count'; exit 1 }
}

# 12) delete vehicle
Step 'delete vehicle' {
    $r = Hit DELETE "/api/vehicles/$($vehicle.id)" $null
    Check 'status' $r.Status 204
}

# 13) get deleted -> 404
Step 'get deleted vehicle' {
    $r = Hit GET "/api/vehicles/$($vehicle.id)" $null
    Check 'status' $r.Status 404
    Write-Host "  body: $($r.Body)"
}

Write-Host ''
Write-Host 'ALL SMOKE TESTS PASSED' -ForegroundColor Green