/*
©AngelaMos | 2026
e2e_test.go

End-to-end tests that run real analyzers against testdata fixtures

Exercises DockerfileAnalyzer and ComposeAnalyzer through the public
Analyze() method using fixtures from testdata/. Tests cover severity
expectations, finding counts, required field completeness, severity
filtering, and file-not-found error handling. All tests skip in
short mode.

Tests:
  TestE2E_DockerfileAnalysis - bad-secrets and good-security Dockerfiles
  TestE2E_ComposeAnalysis - bad-docker-socket and good-production compose
  TestE2E_MultipleFiles - sequential analysis of mixed file types
  TestE2E_FindingProperties - all required finding fields present
  TestE2E_SeverityFiltering - BySeverity and AtOrAbove filter correctness
  TestE2E_FileNotFound - proper errors returned for missing files

Connects to:
  analyzer/dockerfile.go - DockerfileAnalyzer under test
  analyzer/compose.go - ComposeAnalyzer under test
  finding.go - asserts on Collection methods and Severity values
*/

package e2e_test

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

	"github.com/CarterPerez-dev/docksec/internal/analyzer"
	"github.com/CarterPerez-dev/docksec/internal/finding"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
)

func TestE2E_DockerfileAnalysis(t *testing.T) {
	if testing.Short() {
		t.Skip("Skipping E2E test in short mode")
	}

	ctx := context.Background()

	t.Run("analyze bad-secrets.Dockerfile end-to-end", func(t *testing.T) {
		path := filepath.Join(
			"..",
			"testdata",
			"dockerfiles",
			"bad-secrets.Dockerfile",
		)

		require.FileExists(t, path, "Test file should exist")

		a := analyzer.NewDockerfileAnalyzer(path)

		findings, err := a.Analyze(ctx)
		require.NoError(t, err, "Analyze should not return error")
		require.NotEmpty(t, findings, "Should have findings")

		assert.True(t, findings.HasSeverityAtOrAbove(finding.SeverityHigh),
			"Should detect HIGH+ severity issues")

		counts := findings.CountBySeverity()
		t.Logf("Findings by severity: %+v", counts)
		t.Logf("Total findings: %d", findings.Total())

		assert.Greater(t, counts[finding.SeverityHigh], 0,
			"Should have HIGH severity findings")
	})

	t.Run("analyze good-security.Dockerfile end-to-end", func(t *testing.T) {
		path := filepath.Join(
			"..",
			"testdata",
			"dockerfiles",
			"good-security.Dockerfile",
		)

		require.FileExists(t, path, "Test file should exist")

		a := analyzer.NewDockerfileAnalyzer(path)

		findings, err := a.Analyze(ctx)
		require.NoError(t, err, "Analyze should not return error")

		assert.False(t, findings.HasSeverityAtOrAbove(finding.SeverityHigh),
			"Good Dockerfile should have no HIGH+ findings")

		counts := findings.CountBySeverity()
		t.Logf("Findings by severity: %+v", counts)
		t.Logf("Total findings: %d", findings.Total())
	})
}

func TestE2E_ComposeAnalysis(t *testing.T) {
	if testing.Short() {
		t.Skip("Skipping E2E test in short mode")
	}

	ctx := context.Background()

	t.Run("analyze bad-docker-socket.yml end-to-end", func(t *testing.T) {
		path := filepath.Join(
			"..",
			"testdata",
			"compose",
			"bad-docker-socket.yml",
		)

		require.FileExists(t, path, "Test file should exist")

		a := analyzer.NewComposeAnalyzer(path)

		findings, err := a.Analyze(ctx)
		require.NoError(t, err, "Analyze should not return error")
		require.NotEmpty(t, findings, "Should have findings")

		assert.True(
			t,
			findings.HasSeverityAtOrAbove(finding.SeverityCritical),
			"Should detect CRITICAL issues",
		)

		counts := findings.CountBySeverity()
		t.Logf("Findings by severity: %+v", counts)
		t.Logf("Total findings: %d", findings.Total())

		assert.Greater(t, counts[finding.SeverityCritical], 0,
			"Should have CRITICAL findings for Docker socket")
	})

	t.Run("analyze good-production.yml end-to-end", func(t *testing.T) {
		path := filepath.Join(
			"..",
			"testdata",
			"compose",
			"good-production.yml",
		)

		require.FileExists(t, path, "Test file should exist")

		a := analyzer.NewComposeAnalyzer(path)

		findings, err := a.Analyze(ctx)
		require.NoError(t, err, "Analyze should not return error")

		assert.False(
			t,
			findings.HasSeverityAtOrAbove(finding.SeverityCritical),
			"Production compose should have no CRITICAL findings",
		)

		counts := findings.CountBySeverity()
		t.Logf("Findings by severity: %+v", counts)
		t.Logf("Total findings: %d", findings.Total())
	})
}

func TestE2E_MultipleFiles(t *testing.T) {
	if testing.Short() {
		t.Skip("Skipping E2E test in short mode")
	}

	ctx := context.Background()

	files := []struct {
		path       string
		analyzer   func(string) analyzer.Analyzer
		wantIssues bool
	}{
		{
			path: filepath.Join(
				"..",
				"testdata",
				"dockerfiles",
				"bad-secrets.Dockerfile",
			),
			analyzer:   func(p string) analyzer.Analyzer { return analyzer.NewDockerfileAnalyzer(p) },
			wantIssues: true,
		},
		{
			path: filepath.Join(
				"..",
				"testdata",
				"dockerfiles",
				"good-minimal.Dockerfile",
			),
			analyzer:   func(p string) analyzer.Analyzer { return analyzer.NewDockerfileAnalyzer(p) },
			wantIssues: false,
		},
		{
			path: filepath.Join(
				"..",
				"testdata",
				"compose",
				"bad-privileged.yml",
			),
			analyzer:   func(p string) analyzer.Analyzer { return analyzer.NewComposeAnalyzer(p) },
			wantIssues: true,
		},
		{
			path: filepath.Join(
				"..",
				"testdata",
				"compose",
				"good-production.yml",
			),
			analyzer:   func(p string) analyzer.Analyzer { return analyzer.NewComposeAnalyzer(p) },
			wantIssues: false,
		},
	}

	t.Run("analyze multiple files in sequence", func(t *testing.T) {
		var allFindings finding.Collection

		for _, f := range files {
			require.FileExists(t, f.path, "File should exist: %s", f.path)

			a := f.analyzer(f.path)
			findings, err := a.Analyze(ctx)
			require.NoError(t, err, "Analyze should not error for %s", f.path)

			if f.wantIssues {
				assert.NotEmpty(
					t,
					findings,
					"File %s should have findings",
					f.path,
				)
			}

			allFindings = append(allFindings, findings...)
			t.Logf("%s: %d findings", f.path, len(findings))
		}

		t.Logf("Total findings across all files: %d", allFindings.Total())
		assert.NotEmpty(
			t,
			allFindings,
			"Should have findings across all files",
		)

		counts := allFindings.CountBySeverity()
		t.Logf("Overall severity distribution: %+v", counts)
	})
}

func TestE2E_FindingProperties(t *testing.T) {
	if testing.Short() {
		t.Skip("Skipping E2E test in short mode")
	}

	ctx := context.Background()
	path := filepath.Join("..", "testdata", "compose", "bad-caps.yml")

	a := analyzer.NewComposeAnalyzer(path)
	findings, err := a.Analyze(ctx)
	require.NoError(t, err)
	require.NotEmpty(t, findings)

	t.Run("findings have required fields", func(t *testing.T) {
		for _, f := range findings {
			assert.NotEmpty(t, f.ID, "Finding should have ID")
			assert.NotEmpty(t, f.RuleID, "Finding should have RuleID")
			assert.NotEmpty(t, f.Title, "Finding should have Title")
			assert.NotEmpty(
				t,
				f.Description,
				"Finding should have Description",
			)
			assert.NotEmpty(t, f.Category, "Finding should have Category")
			assert.NotEmpty(
				t,
				f.Remediation,
				"Finding should have Remediation",
			)
			assert.NotZero(t, f.Severity, "Finding should have Severity")
			assert.NotEmpty(
				t,
				f.Target.Type,
				"Finding should have Target.Type",
			)
			assert.NotEmpty(
				t,
				f.Target.Name,
				"Finding should have Target.Name",
			)
		}
	})

	t.Run("findings have location info", func(t *testing.T) {
		hasLocation := false
		for _, f := range findings {
			if f.Location != nil {
				hasLocation = true
				assert.NotEmpty(
					t,
					f.Location.Path,
					"Location should have Path",
				)
				assert.Greater(
					t,
					f.Location.Line,
					0,
					"Location should have Line > 0",
				)
				break
			}
		}
		assert.True(
			t,
			hasLocation,
			"At least one finding should have location info",
		)
	})

	t.Run("CIS findings have CIS control info", func(t *testing.T) {
		hasCIS := false
		for _, f := range findings {
			if len(f.RuleID) >= 4 && f.RuleID[:4] == "CIS-" {
				hasCIS = true
				if f.CISControl != nil {
					assert.NotEmpty(
						t,
						f.CISControl.ID,
						"CISControl should have ID",
					)
					assert.NotEmpty(
						t,
						f.CISControl.Title,
						"CISControl should have Title",
					)
				}
				break
			}
		}
		assert.True(t, hasCIS, "Should have at least one CIS finding")
	})
}

func TestE2E_SeverityFiltering(t *testing.T) {
	if testing.Short() {
		t.Skip("Skipping E2E test in short mode")
	}

	ctx := context.Background()
	path := filepath.Join(
		"..",
		"testdata",
		"compose",
		"bad-docker-socket.yml",
	)

	a := analyzer.NewComposeAnalyzer(path)
	findings, err := a.Analyze(ctx)
	require.NoError(t, err)
	require.NotEmpty(t, findings)

	t.Run("filter by severity", func(t *testing.T) {
		critical := findings.BySeverity(finding.SeverityCritical)
		high := findings.BySeverity(finding.SeverityHigh)
		medium := findings.BySeverity(finding.SeverityMedium)

		t.Logf(
			"CRITICAL: %d, HIGH: %d, MEDIUM: %d",
			len(critical),
			len(high),
			len(medium),
		)

		assert.NotEmpty(t, critical, "Should have CRITICAL findings")

		for _, f := range critical {
			assert.Equal(t, finding.SeverityCritical, f.Severity)
		}
	})

	t.Run("filter at or above severity", func(t *testing.T) {
		highAndAbove := findings.AtOrAbove(finding.SeverityHigh)
		mediumAndAbove := findings.AtOrAbove(finding.SeverityMedium)

		assert.NotEmpty(t, highAndAbove, "Should have HIGH+ findings")
		assert.GreaterOrEqual(t, len(mediumAndAbove), len(highAndAbove),
			"MEDIUM+ should include HIGH+ findings")

		for _, f := range highAndAbove {
			assert.GreaterOrEqual(t, f.Severity, finding.SeverityHigh)
		}
	})
}

func TestE2E_FileNotFound(t *testing.T) {
	if testing.Short() {
		t.Skip("Skipping E2E test in short mode")
	}

	ctx := context.Background()

	t.Run("nonexistent Dockerfile", func(t *testing.T) {
		path := filepath.Join(
			"..",
			"testdata",
			"dockerfiles",
			"does-not-exist.Dockerfile",
		)

		a := analyzer.NewDockerfileAnalyzer(path)
		_, err := a.Analyze(ctx)

		assert.Error(t, err, "Should return error for missing file")
		assert.True(t, os.IsNotExist(err), "Error should be file not found")
	})

	t.Run("nonexistent compose file", func(t *testing.T) {
		path := filepath.Join(
			"..",
			"testdata",
			"compose",
			"does-not-exist.yml",
		)

		a := analyzer.NewComposeAnalyzer(path)
		_, err := a.Analyze(ctx)

		assert.Error(t, err, "Should return error for missing file")
	})
}