package docreflect_test

import (
	"code.squareroundforest.org/arpio/docreflect"
	"code.squareroundforest.org/arpio/docreflect/tests/src/testpackage"
	"reflect"
	"strings"
	"testing"
)

func Test(t *testing.T) {
	t.Run("unregistered", func(t *testing.T) {
		d := docreflect.Docs("foo/bar/baz.qux")
		if d != "" {
			t.Fatal()
		}
	})

	t.Run("package", func(t *testing.T) {
		d := docreflect.Docs("code.squareroundforest.org/arpio/docreflect/tests/src/testpackage")
		if !strings.Contains(d, "Package testpackage") {
			t.Fatal()
		}
	})

	t.Run("function by path", func(t *testing.T) {
		d := docreflect.Docs("code.squareroundforest.org/arpio/docreflect/tests/src/testpackage.ExportedFunc")
		if !strings.Contains(d, "ExportedFunc has documentation") {
			t.Fatal()
		}

		if strings.Contains(d, "func(p1, p2)") {
			t.Fatal()
		}
	})

	t.Run("function by value", func(t *testing.T) {
		d := docreflect.Function(reflect.ValueOf(testpackage.ExportedFunc))
		if !strings.Contains(d, "ExportedFunc has documentation") {
			t.Fatal(d)
		}

		if strings.Contains(d, "func(p1, p2)") {
			t.Fatal()
		}
	})

	t.Run("function params", func(t *testing.T) {
		d := docreflect.FunctionParams(reflect.ValueOf(testpackage.ExportedFunc))
		if len(d) != 2 {
			t.Fatal(d)
		}

		if d[0] != "p1" {
			t.Fatal(d)
		}

		if d[1] != "p2" {
			t.Fatal(d)
		}
	})

	t.Run("method as function value", func(t *testing.T) {
		s := testpackage.ExportedType{}
		m := s.Method
		d := docreflect.Function(reflect.ValueOf(m))
		if !strings.Contains(d, "Method is a method of ExportedType") {
			t.Fatal(d)
		}

		p := docreflect.FunctionParams(reflect.ValueOf(m))
		if len(p) != 3 {
			t.Fatal()
		}

		if p[0] != "p1" || p[1] != "p2" || p[2] != "p3" {
			t.Fatal()
		}
	})

	t.Run("type", func(t *testing.T) {
		s := testpackage.ExportedType{}
		typ := reflect.TypeOf(s)
		d := docreflect.Type(typ)
		if !strings.Contains(d, "ExportedType has docs") {
			t.Fatal()
		}
	})

	t.Run("field", func(t *testing.T) {
		s := testpackage.ExportedType{}
		typ := reflect.TypeOf(s)
		d := docreflect.Field(typ, "Foo")
		if !strings.Contains(d, "Foo is a field") {
			t.Fatal()
		}
	})

	t.Run("method", func(t *testing.T) {
		s := testpackage.ExportedType{}
		typ := reflect.TypeOf(s)
		d := docreflect.Method(typ, "Method")
		if !strings.Contains(d, "Method is a method of ExportedType") {
			t.Fatal()
		}

		p := docreflect.MethodParams(typ, "Method")
		if len(p) != 3 {
			t.Fatal()
		}

		if p[0] != "p1" || p[1] != "p2" || p[2] != "p3" {
			t.Fatal()
		}
	})
}