# Azure Backup (MARS agent) collector, against collectors/mars/tests/MockMars.ps1 (shapes from a
# real agent, 2.0.9274: job times are UTC values with no UTC marking, ErrorInfo is always present).

BeforeAll {
    Import-Module (Join-Path $PSScriptRoot 'TestHelpers.psm1') -Force
    $now = Set-MockNow
    $config = @{ ApiUrl = 'http://localhost:1'; ApiKey = 'bdk_x'; Tenant = 'Acme' }
    # MARS reports job times in UTC; the API should get them with +00:00
    function Utc([datetime]$Local) { ConvertTo-ApiTime $Local.ToUniversalTime() }
}

Describe 'MARS collector' {
    Context 'what it reports (dry run)' {
        BeforeAll {
            $r = Invoke-Collector mars -Config $config -DryRun
            $runs = @($r.Reports | Where-Object run | ForEach-Object run)
            $byStart = @{}
            foreach ($run in $runs) { $byStart[$run.started_at] = $run }
        }

        It 'runs cleanly' {
            $r.ExitCode | Should -Be 0
            $r.Log[-1] | Should -Be '[INFO] Reported 4 runs, 0 failures'
        }
        It 'reports the server as one job, named after it' {
            $r.Reports.job.external_id | Select-Object -Unique | Should -Be 'mars:srv01'
            $r.Reports.job.name | Select-Object -Unique | Should -Be 'SRV01 - Azure Backup'
            $r.Reports.source_system | Select-Object -Unique | Should -Be 'Azure Backup (MARS)'
        }
        It 'computes the next run from the schedule (daily at 21:00)' {
            $next = (Get-Date).Date.AddHours(21)
            if ((Get-Date) -ge $next) { $next = $next.AddDays(1) }
            $r.Reports[0].job.next_run_at | Should -Be (ConvertTo-ApiTime $next)
        }
        It 'treats job times as UTC (MARS gives UTC values without marking them)' {
            $byStart.Keys | Should -Contain (Utc $now.AddHours(-12))
            $byStart[(Utc $now.AddHours(-12))].finished_at | Should -Be (Utc $now.AddHours(-11.5))
        }
        It 'reports a completed backup as success, despite its (always present) ErrorInfo with code 0' {
            $run = $byStart[(Utc $now.AddHours(-12))]
            $run.status | Should -Be 'success'
            $run.message | Should -Be 'Backup completed successfully.'
            $run.size_bytes | Should -Be 523407872
            $run.details.datasources | Should -Be @('E:\')
        }
        It 'reports a completed backup with failed files as a warning, with the count and log' {
            $run = $byStart[(Utc $now.AddHours(-36))]
            $run.status | Should -Be 'warning'
            $run.message | Should -BeLike '*E:\: 12 file(s) failed to back up*'
            $run.message | Should -BeLike '*Failed file log: C:\Program Files\Microsoft Azure Recovery Services Agent\Temp\Errors.log*'
            $run.details.failed_files | Should -Be 12
            $run.details.failed_bytes | Should -Be 40MB
        }
        It 'reports a failed backup with its error code and parameters' {
            $run = $byStart[(Utc $now.AddHours(-30))]
            $run.status | Should -Be 'failed'
            $run.message | Should -BeLike '*Error code 100050 (Volume=E:)*'
        }
        It 'reports a backup in progress as running, without a finish time' {
            $run = $byStart[(Utc $now.AddMinutes(-10))]
            $run.status | Should -Be 'running'
            $run.PSObject.Properties.Name | Should -Not -Contain 'finished_at'
        }
        It 'ignores restores and backups outside the lookback window' {
            $runs.Count | Should -Be 4
        }
        It 'uses JobName from the config when set' {
            $named = Invoke-Collector mars -Config ($config + @{ JobName = 'File Server' }) -DryRun
            $named.Reports.job.name | Select-Object -Unique | Should -Be 'File Server'
            $named.Reports.job.external_id | Select-Object -Unique | Should -Be 'mars:srv01'
        }
    }

    Context 'sending to the API' {
        BeforeAll {
            $stub = Start-ApiStub
            $live = $config.Clone(); $live.ApiUrl = $stub.Url
            $first = Invoke-Collector mars -Config $live
            $firstRequests = Get-StubRequests $stub
            $second = Invoke-Collector mars -Config $live -WorkDir $first.WorkDir
            $secondRequests = Get-StubRequests $stub
        }
        AfterAll { Stop-ApiStub $stub }

        It 'sends every run on the first run' {
            $first.ExitCode | Should -Be 0
            $firstRequests.Count | Should -Be 4
        }
        It 'on the next run, resends only the backup in progress' {
            $first.State.Count | Should -Be 3
            $secondRequests.Count | Should -Be 1
            $secondRequests[0].Payload.run.status | Should -Be 'running'
        }
    }
}