//
//  AppPathsTests.swift
//
//  Copyright 2026 Brendan Szymanski <hello@bscubed.dev>
//
//  This program is free software: you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
//  the Free Software Foundation, either version 3 of the License, or
//  (at your option) any later version.
//
//  This program is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU General Public License for more details.
//
//  You should have received a copy of the GNU General Public License
//  along with this program.  If not, see <https://www.gnu.org/licenses/>.
//
//  SPDX-License-Identifier: GPL-3.0-or-later
//

import Foundation
import Testing

@testable import LuminateCore

@Suite struct AppPathsTests {
    @Test("An absolute override is used verbatim")
    func overrideWins() {
        let path = AppPaths.dataDirectory(
            environment: [AppPaths.dataDirectoryOverrideVariable: "/override/luminate"],
            home: URL(filePath: "/home/test"),
            temporaryDirectory: URL(filePath: "/tmp")
        )
        #expect(path == URL(filePath: "/override/luminate"))
    }

    #if canImport(Darwin)
        @Test("Injected home receives the Application Support application directory")
        func applicationSupportHome() {
            let path = AppPaths.dataDirectory(
                environment: [:],
                home: URL(filePath: "/Users/test"),
                temporaryDirectory: URL(filePath: "/tmp")
            )
            #expect(path.path == "/Users/test/Library/Application Support/luminate")
        }
    #else
        @Test("Absolute XDG data home receives the lowercase application directory")
        func xdgDataHome() {
            let path = AppPaths.dataDirectory(
                environment: ["XDG_DATA_HOME": "/data"],
                home: URL(filePath: "/home/test"),
                temporaryDirectory: URL(filePath: "/tmp")
            )
            #expect(path.path == "/data/luminate")
        }

        @Test("Relative XDG data home is ignored")
        func relativeXDGDataHome() {
            let path = AppPaths.dataDirectory(
                environment: ["XDG_DATA_HOME": "relative"],
                home: URL(filePath: "/home/test"),
                temporaryDirectory: URL(filePath: "/tmp")
            )
            #expect(path.path == "/home/test/.local/share/luminate")
        }

        @Test("Root home is a valid Linux data location")
        func rootHome() {
            let path = AppPaths.dataDirectory(
                environment: [:],
                home: URL(filePath: "/"),
                temporaryDirectory: URL(filePath: "/tmp")
            )
            #expect(path.path == "/.local/share/luminate")
        }
    #endif

    @Test("Missing home falls back to the temporary directory")
    func missingHome() {
        let path = AppPaths.dataDirectory(
            environment: [:],
            home: nil,
            temporaryDirectory: URL(filePath: "/tmp/luminate-test")
        )
        #expect(path.path == "/tmp/luminate-test/luminate")
    }
}