package templates

import (
	"os"
	"strings"
	"testing"
)

func TestNew(t *testing.T) {
	tmpl, err := New()
	if err != nil {
		t.Fatalf("New() error = %v", err)
	}
	if tmpl == nil {
		t.Fatal("New() returned nil")
	}
}

func TestRenderRole_Mayor(t *testing.T) {
	tmpl, err := New()
	if err != nil {
		t.Fatalf("New() error = %v", err)
	}

	data := RoleData{
		Role:          "mayor",
		TownRoot:      "/test/town",
		TownName:      "town",
		WorkDir:       "/test/town",
		DefaultBranch: "main",
		MayorSession:  "gt-town-mayor",
		DeaconSession: "gt-town-deacon",
	}

	output, err := tmpl.RenderRole("mayor", data)
	if err != nil {
		t.Fatalf("RenderRole() error = %v", err)
	}

	// Check for key content
	if !strings.Contains(output, "Mayor Context") {
		t.Error("output missing 'Mayor Context'")
	}
	if !strings.Contains(output, "/test/town") {
		t.Error("output missing town root")
	}
	if !strings.Contains(output, "global coordinator") {
		t.Error("output missing role description")
	}
}

func TestRenderRole_Polecat(t *testing.T) {
	tmpl, err := New()
	if err != nil {
		t.Fatalf("New() error = %v", err)
	}

	data := RoleData{
		Role:          "polecat",
		RigName:       "myrig",
		TownRoot:      "/test/town",
		TownName:      "town",
		WorkDir:       "/test/town/myrig/polecats/TestCat",
		DefaultBranch: "main",
		Polecat:       "TestCat",
		MayorSession:  "gt-town-mayor",
		DeaconSession: "gt-town-deacon",
	}

	output, err := tmpl.RenderRole("polecat", data)
	if err != nil {
		t.Fatalf("RenderRole() error = %v", err)
	}

	// Check for key content
	if !strings.Contains(output, "Polecat Context") {
		t.Error("output missing 'Polecat Context'")
	}
	if !strings.Contains(output, "TestCat") {
		t.Error("output missing polecat name")
	}
	if !strings.Contains(output, "myrig") {
		t.Error("output missing rig name")
	}
}

func TestRenderRole_Deacon(t *testing.T) {
	tmpl, err := New()
	if err != nil {
		t.Fatalf("New() error = %v", err)
	}

	data := RoleData{
		Role:          "deacon",
		TownRoot:      "/test/town",
		TownName:      "town",
		WorkDir:       "/test/town",
		DefaultBranch: "main",
		MayorSession:  "gt-town-mayor",
		DeaconSession: "gt-town-deacon",
	}

	output, err := tmpl.RenderRole("deacon", data)
	if err != nil {
		t.Fatalf("RenderRole() error = %v", err)
	}

	// Check for key content
	if !strings.Contains(output, "Deacon Context") {
		t.Error("output missing 'Deacon Context'")
	}
	if !strings.Contains(output, "/test/town") {
		t.Error("output missing town root")
	}
	if !strings.Contains(output, "Patrol Executor") {
		t.Error("output missing role description")
	}
	if !strings.Contains(output, "Startup Protocol: Propulsion") {
		t.Error("output missing startup protocol section")
	}
	if !strings.Contains(output, "mol-deacon-patrol") {
		t.Error("output missing patrol molecule reference")
	}
}

func TestRenderRole_Refinery_DefaultBranch(t *testing.T) {
	tmpl, err := New()
	if err != nil {
		t.Fatalf("New() error = %v", err)
	}

	// Test with custom default branch (e.g., "develop")
	data := RoleData{
		Role:          "refinery",
		RigName:       "myrig",
		TownRoot:      "/test/town",
		TownName:      "town",
		WorkDir:       "/test/town/myrig/refinery/rig",
		DefaultBranch: "develop",
		MayorSession:  "gt-town-mayor",
		DeaconSession: "gt-town-deacon",
	}

	output, err := tmpl.RenderRole("refinery", data)
	if err != nil {
		t.Fatalf("RenderRole() error = %v", err)
	}

	// Check that the custom default branch is used in git commands
	if !strings.Contains(output, "origin/develop") {
		t.Error("output missing 'origin/develop' - DefaultBranch not being used for rebase")
	}
	if !strings.Contains(output, "git checkout develop") {
		t.Error("output missing 'git checkout develop' - DefaultBranch not being used for checkout")
	}
	if !strings.Contains(output, "git push origin develop") {
		t.Error("output missing 'git push origin develop' - DefaultBranch not being used for push")
	}

	// Verify it does NOT contain hardcoded "main" in git commands
	// (main may appear in other contexts like "main branch" descriptions, so we check specific patterns)
	if strings.Contains(output, "git rebase origin/main") {
		t.Error("output still contains hardcoded 'git rebase origin/main' - should use DefaultBranch")
	}
	if strings.Contains(output, "git checkout main") {
		t.Error("output still contains hardcoded 'git checkout main' - should use DefaultBranch")
	}
	if strings.Contains(output, "git push origin main") {
		t.Error("output still contains hardcoded 'git push origin main' - should use DefaultBranch")
	}
}

func TestRenderMessage_Spawn(t *testing.T) {
	tmpl, err := New()
	if err != nil {
		t.Fatalf("New() error = %v", err)
	}

	data := SpawnData{
		Issue:       "gt-123",
		Title:       "Test Issue",
		Priority:    1,
		Description: "Test description",
		Branch:      "feature/test",
		RigName:     "myrig",
		Polecat:     "TestCat",
	}

	output, err := tmpl.RenderMessage("spawn", data)
	if err != nil {
		t.Fatalf("RenderMessage() error = %v", err)
	}

	// Check for key content
	if !strings.Contains(output, "gt-123") {
		t.Error("output missing issue ID")
	}
	if !strings.Contains(output, "Test Issue") {
		t.Error("output missing issue title")
	}
}

func TestRenderMessage_Nudge(t *testing.T) {
	tmpl, err := New()
	if err != nil {
		t.Fatalf("New() error = %v", err)
	}

	data := NudgeData{
		Polecat:    "TestCat",
		Reason:     "No progress for 30 minutes",
		NudgeCount: 2,
		MaxNudges:  3,
		Issue:      "gt-123",
		Status:     "in_progress",
	}

	output, err := tmpl.RenderMessage("nudge", data)
	if err != nil {
		t.Fatalf("RenderMessage() error = %v", err)
	}

	// Check for key content
	if !strings.Contains(output, "TestCat") {
		t.Error("output missing polecat name")
	}
	if !strings.Contains(output, "2/3") {
		t.Error("output missing nudge count")
	}
}

func TestRoleNames(t *testing.T) {
	tmpl, err := New()
	if err != nil {
		t.Fatalf("New() error = %v", err)
	}

	names := tmpl.RoleNames()
	expected := []string{"mayor", "witness", "refinery", "polecat", "crew", "deacon"}

	if len(names) != len(expected) {
		t.Errorf("RoleNames() = %v, want %v", names, expected)
	}

	for i, name := range names {
		if name != expected[i] {
			t.Errorf("RoleNames()[%d] = %q, want %q", i, name, expected[i])
		}
	}
}

func TestGetAllRoleTemplates(t *testing.T) {
	templates, err := GetAllRoleTemplates()
	if err != nil {
		t.Fatalf("GetAllRoleTemplates() error = %v", err)
	}

	if len(templates) == 0 {
		t.Fatal("GetAllRoleTemplates() returned empty map")
	}

	expectedFiles := []string{
		"deacon.md.tmpl",
		"witness.md.tmpl",
		"refinery.md.tmpl",
		"mayor.md.tmpl",
		"polecat.md.tmpl",
		"crew.md.tmpl",
	}

	for _, file := range expectedFiles {
		content, ok := templates[file]
		if !ok {
			t.Errorf("GetAllRoleTemplates() missing %s", file)
			continue
		}
		if len(content) == 0 {
			t.Errorf("GetAllRoleTemplates()[%s] has empty content", file)
		}
	}
}

func TestGetAllRoleTemplates_ContentValidity(t *testing.T) {
	templates, err := GetAllRoleTemplates()
	if err != nil {
		t.Fatalf("GetAllRoleTemplates() error = %v", err)
	}

	for name, content := range templates {
		if !strings.HasSuffix(name, ".md.tmpl") {
			t.Errorf("unexpected file %s (should end with .md.tmpl)", name)
		}
		contentStr := string(content)
		if !strings.Contains(contentStr, "Context") {
			t.Errorf("%s doesn't contain 'Context' - may not be a valid role template", name)
		}
	}
}

func TestNewWithOverrides_NoOverrides(t *testing.T) {
	// When no override paths exist, should work like New()
	tmpl, err := NewWithOverrides("/nonexistent/town", "/nonexistent/rig")
	if err != nil {
		t.Fatalf("NewWithOverrides() error = %v", err)
	}
	if tmpl == nil {
		t.Fatal("NewWithOverrides() returned nil")
	}

	// Should have no overrides
	if tmpl.RoleOverrideCount() != 0 {
		t.Errorf("RoleOverrideCount() = %d, want 0", tmpl.RoleOverrideCount())
	}

	// Should still render embedded templates
	data := RoleData{
		Role:    "polecat",
		RigName: "myrig",
		Polecat: "TestCat",
	}
	output, err := tmpl.RenderRole("polecat", data)
	if err != nil {
		t.Fatalf("RenderRole() error = %v", err)
	}
	if !strings.Contains(output, "Polecat Context") {
		t.Error("embedded template not rendered correctly")
	}
}

func TestNewWithOverrides_WithOverride(t *testing.T) {
	// Create a temp directory with an override template
	tempDir := t.TempDir()
	overrideDir := tempDir + "/templates/roles"
	if err := os.MkdirAll(overrideDir, 0755); err != nil {
		t.Fatalf("failed to create override dir: %v", err)
	}

	// Write a simple override template
	overrideContent := `# Custom Polecat Context
You are polecat {{ .Polecat }} with custom instructions.
Rig: {{ .RigName }}
`
	if err := os.WriteFile(overrideDir+"/polecat.md.tmpl", []byte(overrideContent), 0644); err != nil {
		t.Fatalf("failed to write override template: %v", err)
	}

	// Create Templates with the override
	tmpl, err := NewWithOverrides("", tempDir)
	if err != nil {
		t.Fatalf("NewWithOverrides() error = %v", err)
	}

	// Should have one override
	if tmpl.RoleOverrideCount() != 1 {
		t.Errorf("RoleOverrideCount() = %d, want 1", tmpl.RoleOverrideCount())
	}

	// Should report polecat as having override
	if !tmpl.HasRoleOverride("polecat") {
		t.Error("HasRoleOverride('polecat') = false, want true")
	}
	if tmpl.HasRoleOverride("mayor") {
		t.Error("HasRoleOverride('mayor') = true, want false")
	}

	// Render should use override
	data := RoleData{
		Role:    "polecat",
		RigName: "myrig",
		Polecat: "TestCat",
	}
	output, err := tmpl.RenderRole("polecat", data)
	if err != nil {
		t.Fatalf("RenderRole() error = %v", err)
	}

	// Should contain custom content, not embedded
	if !strings.Contains(output, "Custom Polecat Context") {
		t.Error("override template not used - missing 'Custom Polecat Context'")
	}
	if strings.Contains(output, "Idle Polecat Heresy") {
		t.Error("embedded template used instead of override")
	}
	if !strings.Contains(output, "TestCat") {
		t.Error("template variable not expanded")
	}
}

func TestNewWithOverrides_RigOverridesTown(t *testing.T) {
	// Create temp dirs for both town and rig overrides
	townDir := t.TempDir()
	rigDir := t.TempDir()

	townOverrideDir := townDir + "/templates/roles"
	rigOverrideDir := rigDir + "/templates/roles"

	if err := os.MkdirAll(townOverrideDir, 0755); err != nil {
		t.Fatalf("failed to create town override dir: %v", err)
	}
	if err := os.MkdirAll(rigOverrideDir, 0755); err != nil {
		t.Fatalf("failed to create rig override dir: %v", err)
	}

	// Write town override
	townContent := "# Town Polecat\nTown override: {{ .Polecat }}"
	if err := os.WriteFile(townOverrideDir+"/polecat.md.tmpl", []byte(townContent), 0644); err != nil {
		t.Fatalf("failed to write town override: %v", err)
	}

	// Write rig override (should win)
	rigContent := "# Rig Polecat\nRig override: {{ .Polecat }}"
	if err := os.WriteFile(rigOverrideDir+"/polecat.md.tmpl", []byte(rigContent), 0644); err != nil {
		t.Fatalf("failed to write rig override: %v", err)
	}

	// Create Templates with both overrides
	tmpl, err := NewWithOverrides(townDir, rigDir)
	if err != nil {
		t.Fatalf("NewWithOverrides() error = %v", err)
	}

	// Render should use rig override (higher precedence)
	data := RoleData{Polecat: "TestCat"}
	output, err := tmpl.RenderRole("polecat", data)
	if err != nil {
		t.Fatalf("RenderRole() error = %v", err)
	}

	if !strings.Contains(output, "Rig Polecat") {
		t.Error("rig override not used")
	}
	if strings.Contains(output, "Town Polecat") {
		t.Error("town override used instead of rig override")
	}
}

func TestNewWithOverrides_InvalidTemplate(t *testing.T) {
	// Create a temp directory with an invalid template
	tempDir := t.TempDir()
	overrideDir := tempDir + "/templates/roles"
	if err := os.MkdirAll(overrideDir, 0755); err != nil {
		t.Fatalf("failed to create override dir: %v", err)
	}

	// Write an invalid template (unclosed action)
	invalidContent := "# Invalid Template\n{{ .Polecat"
	if err := os.WriteFile(overrideDir+"/polecat.md.tmpl", []byte(invalidContent), 0644); err != nil {
		t.Fatalf("failed to write invalid template: %v", err)
	}

	// Should return error for invalid template
	_, err := NewWithOverrides("", tempDir)
	if err == nil {
		t.Error("NewWithOverrides() should fail with invalid template")
	}
	if !strings.Contains(err.Error(), "parsing override template") {
		t.Errorf("error should mention parsing override template: %v", err)
	}
}