package review

import (
	"strings"
	"testing"
)

func TestFormatMarkdown_EmptyFindings(t *testing.T) {
	result := &ReviewResult{
		Verdict:        "APPROVE",
		Summary:        "All good, no issues.",
		Findings:       []Finding{},
		Recommendation: "Merge this PR.",
	}

	got := FormatMarkdown(result, "Sonnet")

	if !strings.Contains(got, "## Summary") {
		t.Error("expected Summary header")
	}
	if !strings.Contains(got, "All good, no issues.") {
		t.Error("expected summary text")
	}
	if strings.Contains(got, "## Findings") {
		t.Error("should not contain Findings header when empty")
	}
	if !strings.Contains(got, "**APPROVE**") {
		t.Error("expected verdict in recommendation")
	}
	if !strings.Contains(got, "Review by Sonnet") {
		t.Error("expected reviewer name")
	}
}

func TestFormatMarkdown_MultipleFindings(t *testing.T) {
	result := &ReviewResult{
		Verdict: "REQUEST_CHANGES",
		Summary: "Several issues found.",
		Findings: []Finding{
			{Severity: "MAJOR", File: "main.go", Line: 42, Finding: "Nil pointer dereference"},
			{Severity: "MINOR", File: "util.go", Line: 7, Finding: "Unused variable"},
			{Severity: "NIT", File: "doc.go", Line: 1, Finding: "Typo in comment"},
		},
		Recommendation: "Fix the nil pointer issue before merging.",
	}

	got := FormatMarkdown(result, "GPT")

	if !strings.Contains(got, "## Findings") {
		t.Error("expected Findings header")
	}
	if !strings.Contains(got, "| 1 | [MAJOR] | `main.go` | 42 | Nil pointer dereference |") {
		t.Error("expected first finding row")
	}
	if !strings.Contains(got, "| 2 | [MINOR] | `util.go` | 7 | Unused variable |") {
		t.Error("expected second finding row")
	}
	if !strings.Contains(got, "| 3 | [NIT] | `doc.go` | 1 | Typo in comment |") {
		t.Error("expected third finding row")
	}
	if !strings.Contains(got, "**REQUEST_CHANGES**") {
		t.Error("expected verdict in recommendation")
	}
}

func TestFormatMarkdown_NoReviewerName(t *testing.T) {
	result := &ReviewResult{
		Verdict:        "APPROVE",
		Summary:        "Fine.",
		Findings:       []Finding{},
		Recommendation: "Go ahead.",
	}

	got := FormatMarkdown(result, "")
	if strings.Contains(got, "Review by") {
		t.Error("should not contain reviewer line when name is empty")
	}
}

func TestFormatMarkdown_SpecialChars(t *testing.T) {
	result := &ReviewResult{
		Verdict: "REQUEST_CHANGES",
		Summary: "Issues with `fmt.Sprintf` usage.",
		Findings: []Finding{
			{Severity: "MAJOR", File: "render.go", Line: 15, Finding: "Use `%v` instead of `%s` for interface{}"},
		},
		Recommendation: "Fix the format verb.",
	}

	got := FormatMarkdown(result, "Test")

	// Should contain the backtick content without breaking the table
	if !strings.Contains(got, "`render.go`") {
		t.Error("expected file in backticks")
	}
	if !strings.Contains(got, "Use `%v` instead of `%s` for interface{}") {
		t.Error("expected finding text with backticks preserved")
	}
}

func TestGiteaEvent(t *testing.T) {
	tests := []struct {
		verdict  string
		expected string
	}{
		{"APPROVE", "APPROVED"},
		{"REQUEST_CHANGES", "REQUEST_CHANGES"},
		{"UNKNOWN", "COMMENT"},
		{"", "COMMENT"},
	}

	for _, tc := range tests {
		got := GiteaEvent(tc.verdict)
		if got != tc.expected {
			t.Errorf("GiteaEvent(%q) = %q, want %q", tc.verdict, got, tc.expected)
		}
	}
}