using Recyclarr.Config.Parsing;
using Recyclarr.Platform;
using Recyclarr.TestLibrary;

namespace Recyclarr.IntegrationTests;

[TestFixture]
public class ConfigurationLoaderEnvVarTest : IntegrationTestFixture
{
    [Test]
    public void Test_successful_environment_variable_loading()
    {
        var env = Resolve<IEnvironment>();
        env.GetEnvironmentVariable("SONARR_API_KEY").Returns("the_api_key");
        env.GetEnvironmentVariable("SONARR_URL").Returns("http://the_url");

        var sut = Resolve<ConfigurationLoader>();

        const string testYml = """
            sonarr:
              instance:
                api_key: !env_var SONARR_API_KEY
                base_url: !env_var SONARR_URL http://sonarr:1233
            """;

        var config = sut.Load(testYml);

        config
            .Should()
            .ContainSingle()
            .Which.Yaml.Should()
            .BeEquivalentTo(
                new ServiceConfigYaml { BaseUrl = "http://the_url", ApiKey = "the_api_key" }
            );
    }

    [Test]
    public void Use_default_value_if_env_var_not_defined()
    {
        var sut = Resolve<ConfigurationLoader>();

        const string testYml = """
            sonarr:
              instance:
                base_url: !env_var SONARR_URL http://sonarr:1233
                api_key: value
            """;

        var config = sut.Load(testYml);

        config.Should().ContainSingle().Which.Yaml.BaseUrl.Should().Be("http://sonarr:1233");
    }

    [Test]
    public void Default_value_with_spaces_is_allowed()
    {
        var env = Resolve<IEnvironment>();
        env.GetEnvironmentVariable("SONARR_URL").Returns("");

        var sut = Resolve<ConfigurationLoader>();

        const string testYml = """
            sonarr:
              instance:
                base_url: !env_var SONARR_URL http://somevalue
                api_key: value
            """;

        var config = sut.Load(testYml);

        config.Should().ContainSingle().Which.Yaml.BaseUrl.Should().Be("http://somevalue");
    }

    [Test]
    public void Quotation_characters_are_stripped_from_default_value()
    {
        var env = Resolve<IEnvironment>();
        env.GetEnvironmentVariable("SONARR_URL").Returns("");

        var sut = Resolve<ConfigurationLoader>();

        const string testYml = """
            sonarr:
              instance:
                base_url: !env_var SONARR_URL "http://theurl"
                api_key: !env_var SONARR_API 'the key'
            """;

        var config = sut.Load(testYml);
        config
            .Should()
            .ContainSingle()
            .Which.Yaml.Should()
            .BeEquivalentTo(
                new ServiceConfigYaml { BaseUrl = "http://theurl", ApiKey = "the key" }
            );
    }

    [Test]
    public void Multiple_spaces_between_default_and_env_var_work()
    {
        var sut = Resolve<ConfigurationLoader>();

        const string testYml = """
            sonarr:
              instance:
                base_url: !env_var SONARR_URL    http://somevalue
                api_key: value
            """;

        var config = sut.Load(testYml);
        config.Should().ContainSingle().Which.Yaml.BaseUrl.Should().Be("http://somevalue");
    }

    [Test]
    public void Tab_characters_are_stripped()
    {
        var sut = Resolve<ConfigurationLoader>();

        const string testYml = $"""
            sonarr:
              instance:
                base_url: !env_var SONARR_URL {"\t"}http://somevalue
                api_key: value
            """;

        var config = sut.Load(testYml);
        config.Should().ContainSingle().Which.Yaml.BaseUrl.Should().Be("http://somevalue");
    }

    [Test]
    public void No_configs_returned_when_no_env_var_and_no_default()
    {
        var sut = Resolve<ConfigurationLoader>();

        const string testYml = """
            sonarr:
              instance:
                base_url: !env_var SONARR_URL
                api_key: value
            """;

        var result = sut.Load(testYml);
        result.Should().BeEmpty();
    }
}