# Get-GiteaFileContent.Tests.ps1

# Import the module under test
$modulePath = Join-Path -Path $PSScriptRoot -ChildPath '..\PS-GiteaUtilities\PS-GiteaUtilities.psm1'
Import-Module -Name $modulePath -Force

Describe 'Get-GiteaFileContent' {

    Context 'When all parameters are provided' {
        BeforeEach {
            Mock -CommandName Invoke-RestMethod -ModuleName PS-GiteaUtilities -MockWith {
                return @{
                    content = [System.Convert]::ToBase64String([System.Text.Encoding]::UTF8.GetBytes('Hello World'))
                    size = 11
                    sha = 'fake-sha'
                }
            }
        }

        It 'Should return file content without decoding by default' {
            $result = Get-GiteaFileContent -repoOwner 'user' -repoName 'repo' -filePath 'README.md' -token 'abc123'

            $result | Should -Not -BeNullOrEmpty
            $result.Success | Should -Be $true
            $result.Content | Should -Be ([System.Convert]::ToBase64String([System.Text.Encoding]::UTF8.GetBytes('Hello World')))
        }

        It 'Should decode content when -decode is used' {
            $result = Get-GiteaFileContent -repoOwner 'user' -repoName 'repo' -filePath 'README.md' -token 'abc123' -decode

            $result | Should -Not -BeNullOrEmpty
            $result.Success | Should -Be $true
            $result.Content | Should -Be 'Hello World'
        }
    }

    Context 'When missing parameters and config is loaded' {
        BeforeEach {
            Mock -CommandName Get-GiteaConfiguration -ModuleName PS-GiteaUtilities -MockWith {
                return @{
                    giteaURL = 'https://mock.gitea.com'
                    defaultOwner = 'mockuser'
                    defaultRepo = 'mockrepo'
                    defaultBranch = 'main'
                    token = 'mocktoken'
                }
            }

            Mock -CommandName Invoke-RestMethod -ModuleName PS-GiteaUtilities -MockWith {
                return @{
                    content = [System.Convert]::ToBase64String([System.Text.Encoding]::UTF8.GetBytes('Mock Config Content'))
                    size = 20
                    sha = 'mock-sha'
                }
            }
        }

        It 'Should load configuration from Get-GiteaConfiguration if not all parameters are given' {
            $result = Get-GiteaFileContent -filePath 'test.ps1'

            $result | Should -Not -BeNullOrEmpty
            $result.Path | Should -Be 'test.ps1'
            $result.Content | Should -Be ([System.Convert]::ToBase64String([System.Text.Encoding]::UTF8.GetBytes('Mock Config Content')))
        }
    }

    Context 'When API call fails' {
        BeforeEach {
            Mock -CommandName Invoke-RestMethod -ModuleName PS-GiteaUtilities -MockWith { throw "API call failed" }
            Mock -CommandName Write-Error -ModuleName PS-GiteaUtilities -MockWith { }
        }
    
        It 'Should capture error and mark result as unsuccessful' {
            $result = Get-GiteaFileContent -repoOwner 'user' -repoName 'repo' -filePath 'badfile.ps1' -token 'abc123'
    
            $result.Success | Should -Be $false
            $result.Error | Should -Match 'API call failed'
        }
    }
    

    Context 'Parameter validation' {
        It 'Should throw if required parameters are missing and no config' {
            Mock -CommandName Get-GiteaConfiguration -ModuleName PS-GiteaUtilities -MockWith { return $null }

            { Get-GiteaFileContent -filePath 'something.ps1' } | Should -Throw
        }
    }

    Context 'When decoding file content' {
        BeforeEach {
            # Simulate API returning Base64 content
            Mock -CommandName Invoke-RestMethod -ModuleName PS-GiteaUtilities -MockWith {
                return @{
                    content = [System.Convert]::ToBase64String([System.Text.Encoding]::UTF8.GetBytes('Hello from API!'))
                    size = 15
                    sha = 'fake-sha-for-decode'
                }
            }
        }
    
        It 'Should return base64 encoded content by default (no decode switch)' {
            $result = Get-GiteaFileContent -repoOwner 'user' -repoName 'repo' -filePath 'testfile.txt' -token 'abc123'
    
            $result | Should -Not -BeNullOrEmpty
            $result.Success | Should -Be $true
            $result.Content | Should -Be ([System.Convert]::ToBase64String([System.Text.Encoding]::UTF8.GetBytes('Hello from API!')))
        }
    
        It 'Should decode base64 content into plain text when -decode is used' {
            $result = Get-GiteaFileContent -repoOwner 'user' -repoName 'repo' -filePath 'testfile.txt' -token 'abc123' -decode
    
            $result | Should -Not -BeNullOrEmpty
            $result.Success | Should -Be $true
            $result.Content | Should -Be 'Hello from API!'
        }
    }
    
}