package config

import (
	"testing"
	"time"

	"github.com/influxdata/telegraf/internal/models"
	"github.com/influxdata/telegraf/plugins/inputs"
	"github.com/influxdata/telegraf/plugins/inputs/exec"
	"github.com/influxdata/telegraf/plugins/inputs/memcached"
	"github.com/influxdata/telegraf/plugins/inputs/procstat"
	"github.com/influxdata/telegraf/plugins/parsers"
	"github.com/stretchr/testify/assert"
)

func TestConfig_LoadSingleInput(t *testing.T) {
	c := NewConfig()
	c.LoadConfig("./testdata/single_plugin.toml")

	memcached := inputs.Inputs["memcached"]().(*memcached.Memcached)
	memcached.Servers = []string{"localhost"}

	mConfig := &internal_models.InputConfig{
		Name: "memcached",
		Filter: internal_models.Filter{
			NameDrop:  []string{"metricname2"},
			NamePass:  []string{"metricname1"},
			FieldDrop: []string{"other", "stuff"},
			FieldPass: []string{"some", "strings"},
			TagDrop: []internal_models.TagFilter{
				internal_models.TagFilter{
					Name:   "badtag",
					Filter: []string{"othertag"},
				},
			},
			TagPass: []internal_models.TagFilter{
				internal_models.TagFilter{
					Name:   "goodtag",
					Filter: []string{"mytag"},
				},
			},
			IsActive: true,
		},
		Interval: 5 * time.Second,
	}
	mConfig.Tags = make(map[string]string)

	assert.Equal(t, memcached, c.Inputs[0].Input,
		"Testdata did not produce a correct memcached struct.")
	assert.Equal(t, mConfig, c.Inputs[0].Config,
		"Testdata did not produce correct memcached metadata.")
}

func TestConfig_LoadDirectory(t *testing.T) {
	c := NewConfig()
	err := c.LoadConfig("./testdata/single_plugin.toml")
	if err != nil {
		t.Error(err)
	}
	err = c.LoadDirectory("./testdata/subconfig")
	if err != nil {
		t.Error(err)
	}

	memcached := inputs.Inputs["memcached"]().(*memcached.Memcached)
	memcached.Servers = []string{"localhost"}

	mConfig := &internal_models.InputConfig{
		Name: "memcached",
		Filter: internal_models.Filter{
			NameDrop:  []string{"metricname2"},
			NamePass:  []string{"metricname1"},
			FieldDrop: []string{"other", "stuff"},
			FieldPass: []string{"some", "strings"},
			TagDrop: []internal_models.TagFilter{
				internal_models.TagFilter{
					Name:   "badtag",
					Filter: []string{"othertag"},
				},
			},
			TagPass: []internal_models.TagFilter{
				internal_models.TagFilter{
					Name:   "goodtag",
					Filter: []string{"mytag"},
				},
			},
			IsActive: true,
		},
		Interval: 5 * time.Second,
	}
	mConfig.Tags = make(map[string]string)

	assert.Equal(t, memcached, c.Inputs[0].Input,
		"Testdata did not produce a correct memcached struct.")
	assert.Equal(t, mConfig, c.Inputs[0].Config,
		"Testdata did not produce correct memcached metadata.")

	ex := inputs.Inputs["exec"]().(*exec.Exec)
	p, err := parsers.NewJSONParser("exec", nil, nil)
	assert.NoError(t, err)
	ex.SetParser(p)
	ex.Command = "/usr/bin/myothercollector --foo=bar"
	eConfig := &internal_models.InputConfig{
		Name:              "exec",
		MeasurementSuffix: "_myothercollector",
	}
	eConfig.Tags = make(map[string]string)
	assert.Equal(t, ex, c.Inputs[1].Input,
		"Merged Testdata did not produce a correct exec struct.")
	assert.Equal(t, eConfig, c.Inputs[1].Config,
		"Merged Testdata did not produce correct exec metadata.")

	memcached.Servers = []string{"192.168.1.1"}
	assert.Equal(t, memcached, c.Inputs[2].Input,
		"Testdata did not produce a correct memcached struct.")
	assert.Equal(t, mConfig, c.Inputs[2].Config,
		"Testdata did not produce correct memcached metadata.")

	pstat := inputs.Inputs["procstat"]().(*procstat.Procstat)
	pstat.PidFile = "/var/run/grafana-server.pid"

	pConfig := &internal_models.InputConfig{Name: "procstat"}
	pConfig.Tags = make(map[string]string)

	assert.Equal(t, pstat, c.Inputs[3].Input,
		"Merged Testdata did not produce a correct procstat struct.")
	assert.Equal(t, pConfig, c.Inputs[3].Config,
		"Merged Testdata did not produce correct procstat metadata.")
}