Powershell - 每天分配一个变量

Question

I have a simple script that assigns a variable to 'yesterday', uses a RestAPI to grab my locations' sunrise and sunset times based on yesterday's date, and then formats the results.

$yesDate = (Get-Date).AddDays(-1) | Get-Date -Format "yyyy-MM-dd"
$daylight = (Invoke-RestMethod "https://api.sunrise-sunset.org/json?lat=35.608237&lng=-78.647497&formatted=0&date=$yesDate").results
$sunrise  = ($daylight.Sunrise | Get-Date -Format "yyyy-MM-dd HH:mm:ss")
$sunset   = ($daylight.Sunset | Get-Date -Format "yyyy-MM-dd HH:mm:ss")

What I now want to do is update the script to take each day of the month (for instance, Sept 1 through 27 (yesterday)), grab the sunrise and sunset values, and then assign them a variable (for instance $sunrise1 and $sunset1 ).

Any idea on how I could even do this?

UPDATE:

I have an input file with a line for each minute of the day, with a few sample lines below:

2020-09-28 00:00:00 0.0

2020-09-28 00:01:00 0.0

2020-09-28 00:02:00 0.0

2020-09-28 00:03:00 0.0

2020-09-28 00:04:00 0.0

2020-09-28 00:05:00 0.0

I used my original script above to grab yesterdays' sunrise/sunset times, and then used the below script to remove all rows before sunrise and after sunset. It then, removed the timestamp altogether, then took an average of the remaining values, and finally formatted the average.

Get-Content C:\CumulusMX\summaries\Txt_Files\daily_values_uv_unedited.txt | 
    Where-Object { $_ -ge $sunrise -and $_ -le $sunset } | 
        Out-File C:\CumulusMX\summaries\Txt_Files\daily_values_uv_consolidated.txt
(Get-Content C:\CumulusMX\summaries\Txt_Files\daily_values_uv_consolidated.txt) -Replace '\d\d\d\d-\d\d-\d\d \d\d:\d\d:\d\d\t', '' | 
    Out-File C:\CumulusMX\summaries\Txt_Files\daily_values_uv_no_timestamp.txt
Get-Content C:\CumulusMX\summaries\Txt_Files\daily_values_uv_no_timestamp.txt | 
    Measure-Object -Average | 
        Select-Object -ExpandProperty Average |
            Out-File C:\CumulusMX\summaries\Txt_Files\daily_values_uv_raw_avg.txt
$result = Get-Content C:\CumulusMX\summaries\Txt_Files\daily_values_uv_raw_avg.txt
[MATH]::Round($result,1) |
    Out-File C:\CumulusMX\summaries\Txt_Files\daily_values_uv.txt

This may not be the cleanest way to accomplish the goal, but for the purposes of grabbing an environmental variable on a single day, filtering out the non-daylight hours, and getting the average, it works just fine. However, the next goal is to perform this same function over a month (and at some point, a year), but taking into account that the sunrise and sunset times change daily...

Answer 1

You can iterate through the dates you want (for all days of a specific month you can use [DateTime]::DaysInMonth() . And then use New-Variable with the -Name paramter to create a dedicated variable for each days - if that's what's needed.

for ($i = 1; $i -lt [DateTime]::DaysInMonth(2020, 9); $i++) { 
    # $sunrise = your stuff here
    New-Variable -Name sunrise$i -Value $sunrise
}

Answer 2

You could take a different approach and output an array of custom objects with Sunrise and Sunset properties.

# Yesterday
$yesdate = (Get-Date).AddDays(-1)

# Loop through day 1 to yesterday
$Times = 1..$yesdate.Day | Foreach-Object {
    $currentDate = Get-Date -Day $_ -Month $yesdate.Month -Year $yesdate.Year -Format 'yyyy-MM-dd'
    $daylight = (Invoke-RestMethod "https://api.sunrise-sunset.org/json?lat=35.608237&lng=-78.647497&formatted=0&date=$currentDate").results
    [pscustomobject]@{
        Sunrise = ([datetime]$daylight.Sunrise).ToString('yyyy-MM-dd HH:mm:ss')
        Sunset = ([datetime]$daylight.Sunset).ToString('yyyy-MM-dd HH:mm:ss')
    }
}
# Outputs sample section

# $Times is an array of objects with sunrise and sunset properties
# $Times one array element for each day starting from day 1 to yesterday of the given month
$Times 
# Outputs day 1 sunrise
$Times[0].Sunrise
# Outputs day 10 sunset
$Times[9].Sunset
# Outputs day 15 sunrise and sunset as an object
$Times[14]
# Outputs day 15 sunrise and sunset as comma-separated values
"{0},{1}" -f $Times[14].Sunrise,$Times[14].Sunset

EDIT: Using your examples

If you want to check a specific day against your file, you can do the following:

# Checking day 28

Get-Content C:\CumulusMX\summaries\Txt_Files\daily_values_uv_unedited.txt | Where {
    [datetime]($_ -replace '\d+\.\d+') -ge [datetime]$Times[27].Sunrise -and [datetime]($_ -replace '\d+\.\d+') -le [datetime]$Times[27].Sunset
}

You could also loop through all the days of the given month:

$daily = Get-Content C:\CumulusMX\summaries\Txt_Files\daily_values_uv_unedited.txt
foreach ($Time in $Times) {
    $Sunset = [datetime]$Time.Sunset
    $Sunrise = [datetime]$Time.Sunrise
    $daily | Where {
        [datetime]($_ -replace '\d+\.\d+') -ge $Sunrise -and [datetime]($_ -replace '\d+\.\d+') -le $Sunset
    }
}