/*
Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements.  See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
the License.  You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

package impl

import (
	"fmt"
	"time"

	"github.com/apache/incubator-devlake/plugins/core/dal"

	"github.com/apache/incubator-devlake/errors"
	"github.com/apache/incubator-devlake/plugins/core"
	"github.com/apache/incubator-devlake/plugins/github/api"
	"github.com/apache/incubator-devlake/plugins/github/models"
	"github.com/apache/incubator-devlake/plugins/github/models/migrationscripts"
	"github.com/apache/incubator-devlake/plugins/github/tasks"
	"github.com/apache/incubator-devlake/plugins/helper"
)

var _ core.PluginMeta = (*Github)(nil)
var _ core.PluginInit = (*Github)(nil)
var _ core.PluginTask = (*Github)(nil)
var _ core.PluginApi = (*Github)(nil)
var _ core.PluginModel = (*Github)(nil)
var _ core.PluginBlueprintV100 = (*Github)(nil)
var _ core.CloseablePluginTask = (*Github)(nil)
var _ core.PluginSource = (*Github)(nil)

type Github struct{}

func (plugin Github) Connection() interface{} {
	return &models.GithubConnection{}
}

func (plugin Github) Scope() interface{} {
	return &models.GithubRepo{}
}

func (plugin Github) TransformationRule() interface{} {
	return &models.GithubTransformationRule{}
}

func (plugin Github) Init(basicRes core.BasicRes) errors.Error {
	api.Init(basicRes)
	return nil
}

func (plugin Github) GetTablesInfo() []dal.Tabler {
	return []dal.Tabler{
		&models.GithubConnection{},
		&models.GithubAccount{},
		&models.GithubAccountOrg{},
		&models.GithubCommit{},
		&models.GithubCommitStat{},
		&models.GithubIssue{},
		&models.GithubIssueComment{},
		&models.GithubIssueEvent{},
		&models.GithubIssueLabel{},
		&models.GithubJob{},
		&models.GithubMilestone{},
		&models.GithubPrComment{},
		&models.GithubPrCommit{},
		&models.GithubPrIssue{},
		&models.GithubPrLabel{},
		&models.GithubPrReview{},
		&models.GithubPullRequest{},
		&models.GithubRepo{},
		&models.GithubRepoAccount{},
		&models.GithubRepoCommit{},
		&models.GithubReviewer{},
		&models.GithubRun{},
	}
}

func (plugin Github) Description() string {
	return "To collect and enrich data from GitHub"
}

func (plugin Github) SubTaskMetas() []core.SubTaskMeta {
	return []core.SubTaskMeta{
		tasks.CollectApiIssuesMeta,
		tasks.ExtractApiIssuesMeta,
		tasks.CollectApiPullRequestsMeta,
		tasks.ExtractApiPullRequestsMeta,
		tasks.CollectApiCommentsMeta,
		tasks.ExtractApiCommentsMeta,
		tasks.CollectApiEventsMeta,
		tasks.ExtractApiEventsMeta,
		tasks.CollectApiPullRequestCommitsMeta,
		tasks.ExtractApiPullRequestCommitsMeta,
		tasks.CollectApiPullRequestReviewsMeta,
		tasks.ExtractApiPullRequestReviewsMeta,
		tasks.CollectApiPrReviewCommentsMeta,
		tasks.ExtractApiPrReviewCommentsMeta,
		tasks.CollectApiCommitsMeta,
		tasks.ExtractApiCommitsMeta,
		tasks.CollectApiCommitStatsMeta,
		tasks.ExtractApiCommitStatsMeta,
		tasks.CollectMilestonesMeta,
		tasks.ExtractMilestonesMeta,
		tasks.CollectAccountsMeta,
		tasks.ExtractAccountsMeta,
		tasks.CollectAccountOrgMeta,
		tasks.ExtractAccountOrgMeta,
		tasks.CollectRunsMeta,
		tasks.ExtractRunsMeta,
		tasks.ConvertRunsMeta,
		tasks.CollectJobsMeta,
		tasks.ExtractJobsMeta,
		tasks.ConvertJobsMeta,
		tasks.EnrichPullRequestIssuesMeta,
		tasks.ConvertRepoMeta,
		tasks.ConvertIssuesMeta,
		tasks.ConvertCommitsMeta,
		tasks.ConvertIssueLabelsMeta,
		tasks.ConvertPullRequestCommitsMeta,
		tasks.ConvertPullRequestsMeta,
		tasks.ConvertPullRequestReviewsMeta,
		tasks.ConvertPullRequestLabelsMeta,
		tasks.ConvertPullRequestIssuesMeta,
		tasks.ConvertIssueCommentsMeta,
		tasks.ConvertPullRequestCommentsMeta,
		tasks.ConvertMilestonesMeta,
		tasks.ConvertAccountsMeta,
	}
}

func (plugin Github) PrepareTaskData(taskCtx core.TaskContext, options map[string]interface{}) (interface{}, errors.Error) {
	logger := taskCtx.GetLogger()
	logger.Debug("%v", options)
	op, err := tasks.DecodeTaskOptions(options)
	if err != nil {
		return nil, err
	}
	connectionHelper := helper.NewConnectionHelper(
		taskCtx,
		nil,
	)
	connection := &models.GithubConnection{}
	err = connectionHelper.FirstById(connection, op.ConnectionId)
	if err != nil {
		return nil, errors.Default.Wrap(err, "unable to get github connection by the given connection ID")
	}
	apiClient, err := tasks.CreateApiClient(taskCtx, connection)
	if err != nil {
		return nil, errors.Default.Wrap(err, "unable to get github API client instance")
	}
	err = EnrichOptions(taskCtx, op, apiClient.ApiClient)
	if err != nil {
		return nil, err
	}

	var createdDateAfter time.Time
	if op.CreatedDateAfter != "" {
		createdDateAfter, err = errors.Convert01(time.Parse(time.RFC3339, op.CreatedDateAfter))
		if err != nil {
			return nil, errors.BadInput.Wrap(err, "invalid value for `createdDateAfter`")
		}
	}
	taskData := &tasks.GithubTaskData{
		Options:   op,
		ApiClient: apiClient,
	}

	if !createdDateAfter.IsZero() {
		taskData.CreatedDateAfter = &createdDateAfter
		logger.Debug("collect data updated createdDateAfter %s", createdDateAfter)
	}
	return taskData, nil
}

func (plugin Github) RootPkgPath() string {
	return "github.com/apache/incubator-devlake/plugins/github"
}

func (plugin Github) MigrationScripts() []core.MigrationScript {
	return migrationscripts.All()
}

func (plugin Github) ApiResources() map[string]map[string]core.ApiResourceHandler {
	return map[string]map[string]core.ApiResourceHandler{
		"test": {
			"POST": api.TestConnection,
		},
		"connections": {
			"POST": api.PostConnections,
			"GET":  api.ListConnections,
		},
		"connections/:connectionId": {
			"GET":    api.GetConnection,
			"PATCH":  api.PatchConnection,
			"DELETE": api.DeleteConnection,
		},
		"connections/:connectionId/scopes/:repoId": {
			"GET":   api.GetScope,
			"PATCH": api.UpdateScope,
		},
		"connections/:connectionId/scopes": {
			"GET": api.GetScopeList,
			"PUT": api.PutScope,
		},
		"transformation_rules": {
			"POST": api.CreateTransformationRule,
			"GET":  api.GetTransformationRuleList,
		},
		"transformation_rules/:id": {
			"PATCH": api.UpdateTransformationRule,
			"GET":   api.GetTransformationRule,
		},
		"connections/:connectionId/proxy/rest/*path": {
			"GET": api.Proxy,
		},
	}
}

func (plugin Github) MakePipelinePlan(connectionId uint64, scope []*core.BlueprintScopeV100) (core.PipelinePlan, errors.Error) {
	return api.MakePipelinePlan(plugin.SubTaskMetas(), connectionId, scope)
}

func (plugin Github) MakeDataSourcePipelinePlanV200(connectionId uint64, scopes []*core.BlueprintScopeV200, syncPolicy core.BlueprintSyncPolicy) (pp core.PipelinePlan, sc []core.Scope, err errors.Error) {
	return api.MakeDataSourcePipelinePlanV200(plugin.SubTaskMetas(), connectionId, scopes, &syncPolicy)
}

func (plugin Github) Close(taskCtx core.TaskContext) errors.Error {
	data, ok := taskCtx.GetData().(*tasks.GithubTaskData)
	if !ok {
		return errors.Default.New(fmt.Sprintf("GetData failed when try to close %+v", taskCtx))
	}
	data.ApiClient.Release()
	return nil
}

func EnrichOptions(taskCtx core.TaskContext,
	op *tasks.GithubOptions,
	apiClient *helper.ApiClient) errors.Error {
	var githubRepo models.GithubRepo
	// validate the op and set name=owner/repo if this is from advanced mode or bpV100
	err := tasks.ValidateTaskOptions(op)
	if err != nil {
		return err
	}
	log := taskCtx.GetLogger()
	// for advanced mode or others which we only have name, for bp v200, we have githubId
	err = taskCtx.GetDal().First(&githubRepo, dal.Where(
		"connection_id = ? AND( name = ? OR github_id = ?)",
		op.ConnectionId, op.Name, op.GithubId))
	if err == nil {
		op.Name = githubRepo.Name
		op.GithubId = githubRepo.GithubId
		if op.TransformationRuleId == 0 {
			op.TransformationRuleId = githubRepo.TransformationRuleId
		}
	} else {
		if taskCtx.GetDal().IsErrorNotFound(err) && op.Name != "" {
			var repo *tasks.GithubApiRepo
			repo, err = api.MemorizedGetApiRepo(repo, op, apiClient)
			if err != nil {
				return err
			}
			log.Debug(fmt.Sprintf("Current repo: %s", repo.FullName))
			scope := convertApiRepoToScope(repo, op.ConnectionId)
			err = taskCtx.GetDal().CreateIfNotExist(scope)
			if err != nil {
				return err
			}
			op.GithubId = repo.GithubId
		} else {
			return errors.Default.Wrap(err, fmt.Sprintf("fail to find repo %s", op.Name))
		}
	}
	// Set GithubTransformationRule if it's nil, this has lower priority
	if op.GithubTransformationRule == nil && op.TransformationRuleId != 0 {
		var transformationRule models.GithubTransformationRule
		db := taskCtx.GetDal()
		err = db.First(&transformationRule, dal.Where("id = ?", githubRepo.TransformationRuleId))
		if err != nil && !db.IsErrorNotFound(err) {
			return errors.BadInput.Wrap(err, "fail to get transformationRule")
		}
		op.GithubTransformationRule = &transformationRule
	}
	if op.GithubTransformationRule == nil && op.TransformationRuleId == 0 {
		op.GithubTransformationRule = new(models.GithubTransformationRule)
	}
	return err
}

func convertApiRepoToScope(repo *tasks.GithubApiRepo, connectionId uint64) *models.GithubRepo {
	var scope models.GithubRepo
	scope.ConnectionId = connectionId
	scope.GithubId = repo.GithubId
	scope.CreatedDate = repo.CreatedAt.ToNullableTime()
	scope.Language = repo.Language
	scope.Description = repo.Description
	scope.HTMLUrl = repo.HTMLUrl
	scope.Name = repo.FullName
	scope.CloneUrl = repo.CloneUrl
	return &scope
}