package main

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

func TestCheckCMSCoreSDKGoModFlagsLocalBlockCoreReplace(t *testing.T) {
	root := t.TempDir()
	writeTestFile(t, filepath.Join(root, "go.mod"), `module git.dev.alexdunmow.com/block/cms

go 1.26.2

require git.dev.alexdunmow.com/block/core v0.5.0

replace git.dev.alexdunmow.com/block/core => ../core
`, 0644)

	violations := checkCMSCoreSDKGoMod(root)
	if len(violations) != 1 {
		t.Fatalf("checkCMSCoreSDKGoMod() returned %d violations, want 1: %#v", len(violations), violations)
	}
	if violations[0].rule != "no-local-block-core-replace" {
		t.Fatalf("rule = %q, want no-local-block-core-replace", violations[0].rule)
	}
	if violations[0].line != 7 {
		t.Fatalf("line = %d, want 7", violations[0].line)
	}
}

func TestCheckCMSCoreSDKGoModAllowsPublishedBlockCoreRequire(t *testing.T) {
	root := t.TempDir()
	writeTestFile(t, filepath.Join(root, "go.mod"), `module git.dev.alexdunmow.com/block/cms

go 1.26.2

require git.dev.alexdunmow.com/block/core v0.5.0
`, 0644)

	violations := checkCMSCoreSDKGoMod(root)
	if len(violations) != 0 {
		t.Fatalf("checkCMSCoreSDKGoMod() returned %d violations, want 0: %#v", len(violations), violations)
	}
}

func TestCheckStandalonePluginGoModFlagsReplaceDirectives(t *testing.T) {
	root := t.TempDir()
	writeTestFile(t, filepath.Join(root, "go.mod"), `module example.com/plugin

go 1.26.2

require git.dev.alexdunmow.com/block/core v0.2.1

replace git.dev.alexdunmow.com/block/core => ../block-core
`, 0644)

	violations := checkStandalonePluginGoMod(root, "v0.2.1")
	if len(violations) != 1 {
		t.Fatalf("checkStandalonePluginGoMod() returned %d violations, want 1: %#v", len(violations), violations)
	}
	if violations[0].rule != "no-replace-directives" {
		t.Fatalf("rule = %q, want no-replace-directives", violations[0].rule)
	}
	if violations[0].line != 7 {
		t.Fatalf("line = %d, want 7", violations[0].line)
	}
}

func TestCheckStandalonePluginGoModFlagsOutdatedSDKVersion(t *testing.T) {
	root := t.TempDir()
	writeTestFile(t, filepath.Join(root, "go.mod"), `module example.com/plugin

go 1.26.2

require git.dev.alexdunmow.com/block/core v0.2.0
`, 0644)

	violations := checkStandalonePluginGoMod(root, "v0.2.1")
	if len(violations) != 1 {
		t.Fatalf("checkStandalonePluginGoMod() returned %d violations, want 1: %#v", len(violations), violations)
	}
	if violations[0].rule != "block-core-version-mismatch" {
		t.Fatalf("rule = %q, want block-core-version-mismatch", violations[0].rule)
	}
	if !strings.Contains(violations[0].detail, "want v0.2.1") {
		t.Fatalf("detail = %q, want target version", violations[0].detail)
	}
}

func TestCheckStandalonePluginGoModAllowsMatchingSDKVersionWithoutReplace(t *testing.T) {
	root := t.TempDir()
	writeTestFile(t, filepath.Join(root, "go.mod"), `module example.com/plugin

go 1.26.2

require git.dev.alexdunmow.com/block/core v0.2.1
`, 0644)

	violations := checkStandalonePluginGoMod(root, "v0.2.1")
	if len(violations) != 0 {
		t.Fatalf("checkStandalonePluginGoMod() returned %d violations, want 0: %#v", len(violations), violations)
	}
}

func TestCheckStandalonePluginGoModSkipsCodelessRepo(t *testing.T) {
	root := t.TempDir()
	writeTestFile(t, filepath.Join(root, "plugin.mod"), "[plugin]\nname = \"fixture\"\nversion = \"0.1.0\"\n", 0644)
	writeTestFile(t, filepath.Join(root, "blocks", "blocks.yaml"), "blocks: []\n", 0644)

	if !isCodelessPluginRepo(root) {
		t.Fatal("isCodelessPluginRepo() = false, want true for plugin.mod with no root Go source")
	}
	violations := checkStandalonePluginGoMod(root, "v0.2.1")
	if len(violations) != 0 {
		t.Fatalf("checkStandalonePluginGoMod() returned %d violations, want 0 for codeless repo: %#v", len(violations), violations)
	}
}

func TestCheckStandalonePluginGoModStillRequiresGoModWithRootGoSource(t *testing.T) {
	root := t.TempDir()
	writeTestFile(t, filepath.Join(root, "plugin.mod"), "[plugin]\nname = \"fixture\"\nversion = \"0.1.0\"\n", 0644)
	writeTestFile(t, filepath.Join(root, "main.go"), "package main\nfunc main() {}\n", 0644)

	if isCodelessPluginRepo(root) {
		t.Fatal("isCodelessPluginRepo() = true, want false with root Go source")
	}
	violations := checkStandalonePluginGoMod(root, "v0.2.1")
	if len(violations) != 1 || violations[0].rule != "missing-go-mod" {
		t.Fatalf("checkStandalonePluginGoMod() = %#v, want single missing-go-mod violation", violations)
	}
}