package query

import (
	"dim/types"

	"testing"
)

func TestFieldListToSelect(t *testing.T) {
	tests := []struct {
		table   string
		names   types.FieldList
		mapping map[string]string
		out     string
	}{
		{"foo", types.NewFieldList("name"), map[string]string{"name": "name"}, "name as name"},
		{
			"foo",
			types.NewFieldList("foo", "bar", "baz"),
			map[string]string{"foo": "c.foo", "bar": "b.bar"},
			"b.bar as bar,foo.attributes->'baz' as baz,c.foo as foo",
		},
		{
			"foo",
			types.NewFieldList("subnets", "vlan", "name"),
			map[string]string{"subnets": "s.subnets", "vlan": "vlan.vlan_id", "name": "p.name"},
			"p.name as name,s.subnets as subnets,vlan.vlan_id as vlan",
		},
	}

	for _, test := range tests {
		out := FieldListToSelect(test.table, test.names, test.mapping)
		if out != test.out {
			t.Errorf("expected `%s`, got `%s`", test.out, out)
		}
	}
}

func TestNameToAttrPath(t *testing.T) {
	tests := []struct {
		table string
		in    string
		out   string
	}{
		{"zoo", "foo", `zoo.attributes->'foo'`},
		{"zoo", "foo.bar", `zoo.attributes->'foo'->'bar'`},
		{"zoo", "", `zoo.attributes`},
	}

	for _, test := range tests {
		out := nameToAttrPath(test.table, test.in)
		if test.out != out {
			t.Errorf("expected `%s`, got `%s`", test.out, out)
		}
	}
}

func TestFieldMapToUpdate(t *testing.T) {
	tests := []struct {
		table   string
		vals    types.FieldMap
		mapping map[string]string
		set     string        // expected set clause
		args    []interface{} // expected arguments
	}{
		{ // check for normal field mapping
			"zoo",
			types.NewFieldMap(map[string]interface{}{"key": "value"}),
			map[string]string{"key": "field"},
			"zoo.field = $1",
			[]interface{}{"value"},
		},
		{ // generate attributes field
			"zoo",
			types.NewFieldMap(map[string]interface{}{"key2": "value"}),
			map[string]string{"key": "field"},
			"zoo.attributes->'key2' = $1",
			[]interface{}{"value"},
		},
		{ // mixed mapped and unmapped field
			"zoo",
			types.NewFieldMap(map[string]interface{}{"key2": "value", "key": "value"}),
			map[string]string{"key": "field"},
			"zoo.attributes->'key2' = $1,zoo.field = $2",
			[]interface{}{"value", "value"},
		},
	}

	for _, test := range tests {
		set, args := FieldMapToUpdate(test.table, test.vals, test.mapping)
		if set != test.set {
			t.Errorf("expected set clause `%s`, got `%s`", test.set, set)
		}
		for i, arg := range args {
			if arg != test.args[i] {
				t.Errorf("expected argument at pos %d to be %#v, but was %#v", i, test.args[i], arg)
			}
		}
	}
}