# Daily report: generate + push to WeCom webhook
# Usage:
#   .\run-daily.ps1
#   .\run-daily.ps1 -SkipPush
#   .\run-daily.ps1 -SkipGenerate
#   .\run-daily.ps1 -Force          # bypass duplicate-run lock

param(
    [switch]$SkipPush,
    [switch]$SkipGenerate,
    [switch]$Force
)

$ErrorActionPreference = "Stop"
$Root = Split-Path -Parent $MyInvocation.MyCommand.Path
Set-Location $Root

$LockFile = Join-Path $Root ".cache\run-daily.lock"
$LockMaxMinutes = 30

function Import-DotEnvFile {
    param([string]$Path)
    if (-not (Test-Path $Path)) { return }
    Get-Content $Path -Encoding UTF8 | ForEach-Object {
        if ($_ -match '^\s*#' -or $_ -notmatch '=') { return }
        $pair = $_ -split '=', 2
        if ($pair.Count -eq 2) {
            $name = $pair[0].Trim()
            $value = $pair[1].Trim().Trim('"').Trim("'")
            if ($name -and $value) {
                Set-Item -Path "Env:$name" -Value $value
            }
        }
    }
}

function Test-RunDailyLock {
    if (-not (Test-Path $LockFile)) { return $false }
    $age = (Get-Date) - (Get-Item $LockFile).LastWriteTime
    return $age.TotalMinutes -lt $LockMaxMinutes
}

function Set-RunDailyLock {
    $dir = Split-Path $LockFile -Parent
    if (-not (Test-Path $dir)) {
        New-Item -ItemType Directory -Path $dir -Force | Out-Null
    }
    Set-Content -Path $LockFile -Value (Get-Date -Format "o") -Encoding UTF8
}

function Clear-RunDailyLock {
    if (Test-Path $LockFile) {
        Remove-Item $LockFile -Force -ErrorAction SilentlyContinue
    }
}

if (-not $Force -and (Test-RunDailyLock)) {
    Write-Host "Skip: run-daily already ran within ${LockMaxMinutes} minutes (lock: $LockFile). Use -Force to override."
    exit 0
}

Set-RunDailyLock
try {
    Import-DotEnvFile (Join-Path $Root ".env")
    Import-DotEnvFile (Join-Path $Root ".env.local")

    $python = "python"
    $date = Get-Date -Format "yyyy-MM-dd"
    $reportWecom = Join-Path $Root "output\$date.wecom.md"

    if (-not $SkipGenerate) {
        Write-Host "Generating daily report: $date"
        & $python -m daily generate
        if ($LASTEXITCODE -ne 0) {
            throw "daily generate failed with exit code $LASTEXITCODE"
        }
    }

    if (-not $SkipPush) {
        if (-not (Test-Path $reportWecom)) {
            throw "Report not found: $reportWecom"
        }
        Write-Host "Pushing to WeCom webhook..."
        & $python -m daily push $reportWecom
        if ($LASTEXITCODE -ne 0) {
            throw "daily push failed with exit code $LASTEXITCODE"
        }
    }

    Write-Host "Done: $date"
}
finally {
    Clear-RunDailyLock
}