package projectversion

import (
	"os"
	"path/filepath"
	"strings"
	"testing"

	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
)

func TestParse(t *testing.T) {
	t.Run("valid", func(t *testing.T) {
		version, err := Parse("1.2.3")
		require.NoError(t, err)
		assert.Equal(t, Version{Major: 1, Minor: 2, Patch: 3}, version)
		assert.Equal(t, "1.2.3", version.String())
	})

	t.Run("invalid", func(t *testing.T) {
		invalidValues := []string{"", "1.2", "1.2.3.4", "v1.2.3", "01.2.3", "1.02.3"}
		for _, tc := range invalidValues {
			_, err := Parse(tc)
			assert.Error(t, err, "%q 应校验失败", tc)
		}
	})
}

func TestUpdatePackageJSONVersion(t *testing.T) {
	content := "{\n  \"name\": \"frontend\",\n  \"version\": \"0.0.0\"\n}\n"
	updated, err := UpdatePackageJSONVersion(content, "1.2.3")
	require.NoError(t, err)
	assert.Contains(t, updated, `"version": "1.2.3"`)

	version, err := ReadPackageJSONVersion(updated)
	require.NoError(t, err)
	assert.Equal(t, "1.2.3", version)
}

func TestUpsertEnvVar(t *testing.T) {
	updated := UpsertEnvVar("VITE_API_BASE=/api\n", "VITE_APP_VERSION", "1.2.3")
	assert.Contains(t, updated, "VITE_API_BASE=/api\n")
	assert.Contains(t, updated, "VITE_APP_VERSION=1.2.3\n")

	updated = UpsertEnvVar(updated, "VITE_APP_VERSION", "2.0.0")
	value, ok := ReadEnvVar(updated, "VITE_APP_VERSION")
	assert.True(t, ok)
	assert.Equal(t, "2.0.0", value)
	assert.Equal(t, 1, strings.Count(updated, "VITE_APP_VERSION="))
}

func TestSyncAndCheck(t *testing.T) {
	root := t.TempDir()
	require.NoError(t, os.WriteFile(filepath.Join(root, "VERSION"), []byte("1.2.3\n"), 0o600))
	require.NoError(t, os.MkdirAll(filepath.Join(root, "frontend"), 0o755))
	require.NoError(t, os.WriteFile(filepath.Join(root, "frontend", "package.json"), []byte("{\n  \"name\": \"frontend\",\n  \"version\": \"0.0.0\"\n}\n"), 0o600))
	require.NoError(t, os.WriteFile(filepath.Join(root, "frontend", ".env.production"), []byte("VITE_API_BASE=/api\n"), 0o600))
	require.NoError(t, os.WriteFile(filepath.Join(root, "frontend", ".env.development"), []byte("VITE_API_BASE=\n"), 0o600))
	require.NoError(t, os.WriteFile(filepath.Join(root, "frontend", ".env.desktop"), []byte("VITE_API_BASE=\n"), 0o600))

	require.NoError(t, Sync(root))
	require.NoError(t, Check(root))

	packageJSONContent, err := os.ReadFile(filepath.Join(root, "frontend", "package.json"))
	require.NoError(t, err)
	assert.Contains(t, string(packageJSONContent), `"version": "1.2.3"`)

	for _, relPath := range frontendVersionFiles {
		content, readErr := os.ReadFile(filepath.Join(root, relPath))
		require.NoError(t, readErr)
		assert.Contains(t, string(content), "VITE_APP_VERSION=1.2.3\n")
	}
}

func TestVerifyTag(t *testing.T) {
	root := t.TempDir()
	require.NoError(t, os.WriteFile(filepath.Join(root, "VERSION"), []byte("1.2.3\n"), 0o600))

	require.NoError(t, VerifyTag(root, "v1.2.3"))
	assert.Error(t, VerifyTag(root, "1.2.3"))
	assert.Error(t, VerifyTag(root, "v1.2.4"))
}

func TestAssetNames(t *testing.T) {
	linuxServer, err := ServerAssetName("1.2.3", "linux", "amd64")
	require.NoError(t, err)
	assert.Equal(t, "nex-server_1.2.3_linux_amd64.tar.gz", linuxServer)

	macServer, err := ServerAssetName("1.2.3", "darwin", "arm64")
	require.NoError(t, err)
	assert.Equal(t, "nex-server_1.2.3_darwin_arm64.tar.gz", macServer)

	macDesktop, err := DesktopAssetName("1.2.3", "macos")
	require.NoError(t, err)
	assert.Equal(t, "Nex_1.2.3_macOS_universal.zip", macDesktop)

	_, err = DesktopAssetName("1.2.3", "ios")
	assert.Error(t, err)
}

func TestDesktopInfoPlist(t *testing.T) {
	plist, err := DesktopInfoPlist("1.2.3", "13.0")
	require.NoError(t, err)
	assert.Contains(t, plist, "<key>CFBundleShortVersionString</key>\n    <string>1.2.3</string>")
	assert.Contains(t, plist, "<key>CFBundleVersion</key>\n    <string>1.2.3</string>")
	assert.Contains(t, plist, "<key>LSMinimumSystemVersion</key>\n    <string>13.0</string>")

	_, err = DesktopInfoPlist("1.2", "13.0")
	assert.Error(t, err)
	_, err = DesktopInfoPlist("1.2.3", "")
	assert.Error(t, err)
}

func TestLess(t *testing.T) {
	assert.True(t, Version{1, 0, 0}.Less(Version{2, 0, 0}))
	assert.True(t, Version{1, 1, 0}.Less(Version{1, 2, 0}))
	assert.True(t, Version{1, 0, 1}.Less(Version{1, 0, 2}))
	assert.False(t, Version{2, 0, 0}.Less(Version{1, 0, 0}))
	assert.False(t, Version{1, 0, 0}.Less(Version{1, 0, 0}))
}

func TestBump(t *testing.T) {
	setupRoot := func(t *testing.T) string {
		t.Helper()
		root := t.TempDir()
		require.NoError(t, os.WriteFile(filepath.Join(root, "VERSION"), []byte("0.1.0\n"), 0o600))
		return root
	}

	t.Run("major", func(t *testing.T) {
		root := setupRoot(t)
		v, err := Bump(root, "major")
		require.NoError(t, err)
		assert.Equal(t, Version{1, 0, 0}, v)

		read, readErr := ReadString(root)
		require.NoError(t, readErr)
		assert.Equal(t, "1.0.0", read)
	})

	t.Run("minor", func(t *testing.T) {
		root := setupRoot(t)
		v, err := Bump(root, "minor")
		require.NoError(t, err)
		assert.Equal(t, Version{0, 2, 0}, v)

		read, readErr := ReadString(root)
		require.NoError(t, readErr)
		assert.Equal(t, "0.2.0", read)
	})

	t.Run("patch", func(t *testing.T) {
		root := setupRoot(t)
		v, err := Bump(root, "patch")
		require.NoError(t, err)
		assert.Equal(t, Version{0, 1, 1}, v)

		read, readErr := ReadString(root)
		require.NoError(t, readErr)
		assert.Equal(t, "0.1.1", read)
	})

	t.Run("specific version", func(t *testing.T) {
		root := setupRoot(t)
		v, err := Bump(root, "1.0.0")
		require.NoError(t, err)
		assert.Equal(t, Version{1, 0, 0}, v)
	})

	t.Run("same version as current", func(t *testing.T) {
		root := setupRoot(t)
		v, err := Bump(root, "0.1.0")
		require.NoError(t, err)
		assert.Equal(t, Version{0, 1, 0}, v)
	})

	t.Run("invalid argument", func(t *testing.T) {
		root := setupRoot(t)
		_, err := Bump(root, "invalid")
		assert.Error(t, err)
	})
}

func TestCheckNoRegression(t *testing.T) {
	t.Run("greater than existing tag", func(t *testing.T) {
		err := CheckNoRegression(Version{0, 2, 0}, []string{"v0.1.0"})
		assert.NoError(t, err)
	})

	t.Run("equal to existing tag", func(t *testing.T) {
		err := CheckNoRegression(Version{0, 1, 0}, []string{"v0.1.0"})
		assert.Error(t, err)
	})

	t.Run("less than existing tag", func(t *testing.T) {
		err := CheckNoRegression(Version{0, 1, 5}, []string{"v0.2.0"})
		assert.Error(t, err)
	})

	t.Run("no tags", func(t *testing.T) {
		err := CheckNoRegression(Version{0, 1, 0}, nil)
		assert.NoError(t, err)
	})

	t.Run("skips non-semver tags", func(t *testing.T) {
		err := CheckNoRegression(Version{0, 2, 0}, []string{"v0.1.0", "some-other-tag"})
		assert.NoError(t, err)
	})

	t.Run("picks max tag", func(t *testing.T) {
		err := CheckNoRegression(Version{0, 1, 5}, []string{"v0.1.0", "v0.2.0", "v0.0.5"})
		assert.Error(t, err)
	})
}