package main

import (
	"net/http"
	"net/http/httptest"
	"testing"
)

func TestConfirmVolunteer(t *testing.T) {
	app := testApp(t)
	mux := testMux(app)
	admin := testAdminUser(t, app)
	tok := testToken(t, app, admin)

	dept, _ := app.createDepartment(Department{Name: "Gate"})
	deptID := dept.ID
	p, _ := app.createParticipant(Participant{PreferredName: "Titania", Email: "titania@test.com", EmailConfirmed: true})
	v, _ := app.createVolunteer(Volunteer{ParticipantID: p.ID, DepartmentID: &deptID})

	w := httptest.NewRecorder()
	mux.ServeHTTP(w, testAuthRequest("POST", "/api/volunteers/"+itoa(v.ID)+"/confirm", nil, tok))
	if w.Code != http.StatusOK {
		t.Fatalf("expected 200, got %d: %s", w.Code, w.Body.String())
	}

	result := parseJSON(t, w)
	vol := result["confirmed"]
	if vol != true {
		t.Error("expected confirmed=true in response")
	}

	got, _ := app.getVolunteer(v.ID)
	if got == nil || !got.Confirmed {
		t.Error("volunteer should be confirmed in DB")
	}
	if got.ConfirmedAt == nil {
		t.Error("confirmed_at should be set")
	}
}

func TestConfirmVolunteerIdempotent(t *testing.T) {
	app := testApp(t)
	mux := testMux(app)
	admin := testAdminUser(t, app)
	tok := testToken(t, app, admin)

	p, _ := app.createParticipant(Participant{PreferredName: "Puck", Email: "puck@test.com", EmailConfirmed: true})
	v, _ := app.createVolunteer(Volunteer{ParticipantID: p.ID})

	// Confirm twice — second should be a no-op, not an error.
	w := httptest.NewRecorder()
	mux.ServeHTTP(w, testAuthRequest("POST", "/api/volunteers/"+itoa(v.ID)+"/confirm", nil, tok))
	if w.Code != 200 {
		t.Fatalf("first confirm: %d", w.Code)
	}

	w = httptest.NewRecorder()
	mux.ServeHTTP(w, testAuthRequest("POST", "/api/volunteers/"+itoa(v.ID)+"/confirm", nil, tok))
	if w.Code != 200 {
		t.Fatalf("second confirm: %d", w.Code)
	}
}

func TestConfirmVolunteerRequiresRole(t *testing.T) {
	app := testApp(t)
	mux := testMux(app)

	// Gatekeeper role should NOT be able to confirm volunteers.
	gatekeeper := testUserWithRoles(t, app, "Egeus", []string{"gatekeeper"}, []int{})
	tok := testToken(t, app, gatekeeper)

	p, _ := app.createParticipant(Participant{PreferredName: "Helena", EmailConfirmed: true})
	v, _ := app.createVolunteer(Volunteer{ParticipantID: p.ID})

	w := httptest.NewRecorder()
	mux.ServeHTTP(w, testAuthRequest("POST", "/api/volunteers/"+itoa(v.ID)+"/confirm", nil, tok))
	if w.Code != http.StatusForbidden {
		t.Errorf("expected 403 for gatekeeper role, got %d", w.Code)
	}
}

func TestCoLeadDeleteVolunteerOwnDept(t *testing.T) {
	app := testApp(t)
	mux := testMux(app)

	deptA, _ := app.createDepartment(Department{Name: "Gate"})
	colead := testUserWithRoles(t, app, "Hermia", []string{"colead"}, []int{deptA.ID})
	tok := testToken(t, app, colead)

	deptAID := deptA.ID
	p, _ := app.createParticipant(Participant{PreferredName: "Puck", Email: "puck@test.com"})
	v, _ := app.createVolunteer(Volunteer{ParticipantID: p.ID, DepartmentID: &deptAID})

	w := httptest.NewRecorder()
	mux.ServeHTTP(w, testAuthRequest("DELETE", "/api/volunteers/"+itoa(v.ID), nil, tok))
	if w.Code != http.StatusNoContent {
		t.Errorf("expected 204 for own dept, got %d: %s", w.Code, w.Body.String())
	}
}

func TestCoLeadDeleteVolunteerOtherDept(t *testing.T) {
	app := testApp(t)
	mux := testMux(app)

	deptA, _ := app.createDepartment(Department{Name: "Gate"})
	deptB, _ := app.createDepartment(Department{Name: "Build"})
	colead := testUserWithRoles(t, app, "Hermia", []string{"colead"}, []int{deptA.ID})
	tok := testToken(t, app, colead)

	deptBID := deptB.ID
	p, _ := app.createParticipant(Participant{PreferredName: "Puck", Email: "puck@test.com"})
	v, _ := app.createVolunteer(Volunteer{ParticipantID: p.ID, DepartmentID: &deptBID})

	w := httptest.NewRecorder()
	mux.ServeHTTP(w, testAuthRequest("DELETE", "/api/volunteers/"+itoa(v.ID), nil, tok))
	if w.Code != http.StatusForbidden {
		t.Errorf("expected 403 for other dept, got %d", w.Code)
	}
}

func TestCoLeadConfirmVolunteerOtherDept(t *testing.T) {
	app := testApp(t)
	mux := testMux(app)

	deptA, _ := app.createDepartment(Department{Name: "Gate"})
	deptB, _ := app.createDepartment(Department{Name: "Build"})
	colead := testUserWithRoles(t, app, "Hermia", []string{"colead"}, []int{deptA.ID})
	tok := testToken(t, app, colead)

	deptBID := deptB.ID
	p, _ := app.createParticipant(Participant{PreferredName: "Puck", Email: "puck@test.com"})
	v, _ := app.createVolunteer(Volunteer{ParticipantID: p.ID, DepartmentID: &deptBID})

	w := httptest.NewRecorder()
	mux.ServeHTTP(w, testAuthRequest("POST", "/api/volunteers/"+itoa(v.ID)+"/confirm", nil, tok))
	if w.Code != http.StatusForbidden {
		t.Errorf("expected 403 for other dept, got %d", w.Code)
	}
}

func TestCoLeadReadyVolunteerOtherDept(t *testing.T) {
	app := testApp(t)
	mux := testMux(app)

	deptA, _ := app.createDepartment(Department{Name: "Gate"})
	deptB, _ := app.createDepartment(Department{Name: "Build"})
	colead := testUserWithRoles(t, app, "Hermia", []string{"colead"}, []int{deptA.ID})
	tok := testToken(t, app, colead)

	deptBID := deptB.ID
	p, _ := app.createParticipant(Participant{PreferredName: "Puck", Email: "puck@test.com"})
	v, _ := app.createVolunteer(Volunteer{ParticipantID: p.ID, DepartmentID: &deptBID})

	w := httptest.NewRecorder()
	mux.ServeHTTP(w, testAuthRequest("POST", "/api/volunteers/"+itoa(v.ID)+"/ready", nil, tok))
	if w.Code != http.StatusForbidden {
		t.Errorf("expected 403 for other dept, got %d", w.Code)
	}
}

func TestCoLeadAssignShiftOtherDept(t *testing.T) {
	app := testApp(t)
	mux := testMux(app)

	deptA, _ := app.createDepartment(Department{Name: "Gate"})
	deptB, _ := app.createDepartment(Department{Name: "Build"})
	colead := testUserWithRoles(t, app, "Hermia", []string{"colead"}, []int{deptA.ID})
	tok := testToken(t, app, colead)

	deptBID := deptB.ID
	p, _ := app.createParticipant(Participant{PreferredName: "Puck", Email: "puck@test.com"})
	v, _ := app.createVolunteer(Volunteer{ParticipantID: p.ID, DepartmentID: &deptBID})
	s, _ := app.createShift(Shift{DepartmentID: deptB.ID, Name: "AM", Day: "2026-03-15", StartTime: "08:00", EndTime: "12:00"})

	w := httptest.NewRecorder()
	mux.ServeHTTP(w, testAuthRequest("POST", "/api/volunteers/"+itoa(v.ID)+"/shifts", map[string]any{
		"shift_id": s.ID,
	}, tok))
	if w.Code != http.StatusForbidden {
		t.Errorf("expected 403 for other dept, got %d", w.Code)
	}
}

func TestCoLeadUpdateVolunteerTargetDeptForbidden(t *testing.T) {
	app := testApp(t)
	mux := testMux(app)

	deptA, _ := app.createDepartment(Department{Name: "Gate"})
	deptB, _ := app.createDepartment(Department{Name: "Build"})
	colead := testUserWithRoles(t, app, "Hermia", []string{"colead"}, []int{deptA.ID})
	tok := testToken(t, app, colead)

	deptAID := deptA.ID
	p, _ := app.createParticipant(Participant{PreferredName: "Puck", Email: "puck@test.com"})
	v, _ := app.createVolunteer(Volunteer{ParticipantID: p.ID, DepartmentID: &deptAID})

	w := httptest.NewRecorder()
	mux.ServeHTTP(w, testAuthRequest("PUT", "/api/volunteers/"+itoa(v.ID), map[string]any{
		"department_id": deptB.ID,
	}, tok))
	if w.Code != http.StatusForbidden {
		t.Errorf("expected 403 moving to other dept, got %d: %s", w.Code, w.Body.String())
	}
}

func TestUpdateVolunteerDepartment(t *testing.T) {
	app := testApp(t)
	mux := testMux(app)
	admin := testAdminUser(t, app)
	tok := testToken(t, app, admin)

	dept, _ := app.createDepartment(Department{Name: "Gate"})
	p, _ := app.createParticipant(Participant{PreferredName: "Hermia"})
	v, _ := app.createVolunteer(Volunteer{ParticipantID: p.ID})

	// Assign department via update.
	w := httptest.NewRecorder()
	mux.ServeHTTP(w, testAuthRequest("PUT", "/api/volunteers/"+itoa(v.ID), map[string]any{
		"department_id": dept.ID,
	}, tok))
	if w.Code != 200 {
		t.Fatalf("expected 200, got %d: %s", w.Code, w.Body.String())
	}

	got, _ := app.getVolunteer(v.ID)
	if got.DepartmentID == nil || *got.DepartmentID != dept.ID {
		t.Errorf("department_id = %v, want %d", got.DepartmentID, dept.ID)
	}
}

func TestUpdateVolunteerCoLeadAutoConfirms(t *testing.T) {
	app := testApp(t)
	mux := testMux(app)
	admin := testAdminUser(t, app)
	tok := testToken(t, app, admin)

	dept, _ := app.createDepartment(Department{Name: "Build"})
	deptID := dept.ID
	p, _ := app.createParticipant(Participant{PreferredName: "Lysander", Email: "lys@test.com", EmailConfirmed: true})
	v, _ := app.createVolunteer(Volunteer{ParticipantID: p.ID, DepartmentID: &deptID})

	// Verify not confirmed before update.
	got, _ := app.getVolunteer(v.ID)
	if got.Confirmed {
		t.Fatal("should not be confirmed before update")
	}

	// Update is_lead=true should auto-confirm.
	w := httptest.NewRecorder()
	mux.ServeHTTP(w, testAuthRequest("PUT", "/api/volunteers/"+itoa(v.ID), map[string]any{
		"department_id": deptID, "is_lead": true,
	}, tok))
	if w.Code != 200 {
		t.Fatalf("expected 200, got %d: %s", w.Code, w.Body.String())
	}

	got, _ = app.getVolunteer(v.ID)
	if !got.IsLead {
		t.Error("expected is_lead=true")
	}
	if !got.Confirmed {
		t.Error("co-lead should be auto-confirmed")
	}
}