package main

import (
	"bytes"
	"context"
	"encoding/json"
	"os"
	"strings"
	"testing"
	"time"

	rtest "github.com/restic/restic/internal/test"
)

func testRunFind(t testing.TB, wantJSON bool, gopts GlobalOptions, pattern string) []byte {
	buf := bytes.NewBuffer(nil)
	globalOptions.stdout = buf
	globalOptions.JSON = wantJSON
	defer func() {
		globalOptions.stdout = os.Stdout
		globalOptions.JSON = false
	}()

	opts := FindOptions{}

	rtest.OK(t, runFind(context.TODO(), opts, gopts, []string{pattern}))

	return buf.Bytes()
}

func TestFind(t *testing.T) {
	env, cleanup := withTestEnvironment(t)
	defer cleanup()

	datafile := testSetupBackupData(t, env)
	opts := BackupOptions{}

	testRunBackup(t, "", []string{env.testdata}, opts, env.gopts)
	testRunCheck(t, env.gopts)

	results := testRunFind(t, false, env.gopts, "unexistingfile")
	rtest.Assert(t, len(results) == 0, "unexisting file found in repo (%v)", datafile)

	results = testRunFind(t, false, env.gopts, "testfile")
	lines := strings.Split(string(results), "\n")
	rtest.Assert(t, len(lines) == 2, "expected one file found in repo (%v)", datafile)

	results = testRunFind(t, false, env.gopts, "testfile*")
	lines = strings.Split(string(results), "\n")
	rtest.Assert(t, len(lines) == 4, "expected three files found in repo (%v)", datafile)
}

type testMatch struct {
	Path        string    `json:"path,omitempty"`
	Permissions string    `json:"permissions,omitempty"`
	Size        uint64    `json:"size,omitempty"`
	Date        time.Time `json:"date,omitempty"`
	UID         uint32    `json:"uid,omitempty"`
	GID         uint32    `json:"gid,omitempty"`
}

type testMatches struct {
	Hits       int         `json:"hits,omitempty"`
	SnapshotID string      `json:"snapshot,omitempty"`
	Matches    []testMatch `json:"matches,omitempty"`
}

func TestFindJSON(t *testing.T) {
	env, cleanup := withTestEnvironment(t)
	defer cleanup()

	datafile := testSetupBackupData(t, env)
	opts := BackupOptions{}

	testRunBackup(t, "", []string{env.testdata}, opts, env.gopts)
	testRunCheck(t, env.gopts)

	results := testRunFind(t, true, env.gopts, "unexistingfile")
	matches := []testMatches{}
	rtest.OK(t, json.Unmarshal(results, &matches))
	rtest.Assert(t, len(matches) == 0, "expected no match in repo (%v)", datafile)

	results = testRunFind(t, true, env.gopts, "testfile")
	rtest.OK(t, json.Unmarshal(results, &matches))
	rtest.Assert(t, len(matches) == 1, "expected a single snapshot in repo (%v)", datafile)
	rtest.Assert(t, len(matches[0].Matches) == 1, "expected a single file to match (%v)", datafile)
	rtest.Assert(t, matches[0].Hits == 1, "expected hits to show 1 match (%v)", datafile)

	results = testRunFind(t, true, env.gopts, "testfile*")
	rtest.OK(t, json.Unmarshal(results, &matches))
	rtest.Assert(t, len(matches) == 1, "expected a single snapshot in repo (%v)", datafile)
	rtest.Assert(t, len(matches[0].Matches) == 3, "expected 3 files to match (%v)", datafile)
	rtest.Assert(t, matches[0].Hits == 3, "expected hits to show 3 matches (%v)", datafile)
}