// Copyright 2020 The go-github AUTHORS. All rights reserved.
//
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package github

import (
	"context"
	"fmt"
	"net/http"
	"net/url"
)

// WorkflowRun represents a repository action workflow run.
type WorkflowRun struct {
	ID                 *int64         `json:"id,omitempty"`
	Name               *string        `json:"name,omitempty"`
	NodeID             *string        `json:"node_id,omitempty"`
	HeadBranch         *string        `json:"head_branch,omitempty"`
	HeadSHA            *string        `json:"head_sha,omitempty"`
	RunNumber          *int           `json:"run_number,omitempty"`
	RunAttempt         *int           `json:"run_attempt,omitempty"`
	Event              *string        `json:"event,omitempty"`
	DisplayTitle       *string        `json:"display_title,omitempty"`
	Status             *string        `json:"status,omitempty"`
	Conclusion         *string        `json:"conclusion,omitempty"`
	WorkflowID         *int64         `json:"workflow_id,omitempty"`
	CheckSuiteID       *int64         `json:"check_suite_id,omitempty"`
	CheckSuiteNodeID   *string        `json:"check_suite_node_id,omitempty"`
	URL                *string        `json:"url,omitempty"`
	HTMLURL            *string        `json:"html_url,omitempty"`
	PullRequests       []*PullRequest `json:"pull_requests,omitempty"`
	CreatedAt          *Timestamp     `json:"created_at,omitempty"`
	UpdatedAt          *Timestamp     `json:"updated_at,omitempty"`
	RunStartedAt       *Timestamp     `json:"run_started_at,omitempty"`
	JobsURL            *string        `json:"jobs_url,omitempty"`
	LogsURL            *string        `json:"logs_url,omitempty"`
	CheckSuiteURL      *string        `json:"check_suite_url,omitempty"`
	ArtifactsURL       *string        `json:"artifacts_url,omitempty"`
	CancelURL          *string        `json:"cancel_url,omitempty"`
	RerunURL           *string        `json:"rerun_url,omitempty"`
	PreviousAttemptURL *string        `json:"previous_attempt_url,omitempty"`
	HeadCommit         *HeadCommit    `json:"head_commit,omitempty"`
	WorkflowURL        *string        `json:"workflow_url,omitempty"`
	Repository         *Repository    `json:"repository,omitempty"`
	HeadRepository     *Repository    `json:"head_repository,omitempty"`
	Actor              *User          `json:"actor,omitempty"`
	TriggeringActor    *User          `json:"triggering_actor,omitempty"`
}

// WorkflowRuns represents a slice of repository action workflow run.
type WorkflowRuns struct {
	TotalCount   *int           `json:"total_count,omitempty"`
	WorkflowRuns []*WorkflowRun `json:"workflow_runs,omitempty"`
}

// ListWorkflowRunsOptions specifies optional parameters to ListWorkflowRuns.
type ListWorkflowRunsOptions struct {
	Actor               string `url:"actor,omitempty"`
	Branch              string `url:"branch,omitempty"`
	Event               string `url:"event,omitempty"`
	Status              string `url:"status,omitempty"`
	Created             string `url:"created,omitempty"`
	HeadSHA             string `url:"head_sha,omitempty"`
	ExcludePullRequests bool   `url:"exclude_pull_requests,omitempty"`
	CheckSuiteID        int64  `url:"check_suite_id,omitempty"`
	ListOptions
}

// WorkflowRunUsage represents a usage of a specific workflow run.
type WorkflowRunUsage struct {
	Billable      *WorkflowRunBillMap `json:"billable,omitempty"`
	RunDurationMS *int64              `json:"run_duration_ms,omitempty"`
}

// WorkflowRunBillMap represents different runner environments available for a workflow run.
// Its key is the name of its environment, e.g. "UBUNTU", "MACOS", "WINDOWS", etc.
type WorkflowRunBillMap map[string]*WorkflowRunBill

// WorkflowRunBill specifies billable time for a specific environment in a workflow run.
type WorkflowRunBill struct {
	TotalMS *int64               `json:"total_ms,omitempty"`
	Jobs    *int                 `json:"jobs,omitempty"`
	JobRuns []*WorkflowRunJobRun `json:"job_runs,omitempty"`
}

// WorkflowRunJobRun represents a usage of individual jobs of a specific workflow run.
type WorkflowRunJobRun struct {
	JobID      *int   `json:"job_id,omitempty"`
	DurationMS *int64 `json:"duration_ms,omitempty"`
}

// WorkflowRunAttemptOptions specifies optional parameters to GetWorkflowRunAttempt.
type WorkflowRunAttemptOptions struct {
	ExcludePullRequests *bool `url:"exclude_pull_requests,omitempty"`
}

// PendingDeploymentsRequest specifies body parameters to PendingDeployments.
type PendingDeploymentsRequest struct {
	EnvironmentIDs []int64 `json:"environment_ids"`
	// State can be one of: "approved", "rejected".
	State   string `json:"state"`
	Comment string `json:"comment"`
}

func (s *ActionsService) listWorkflowRuns(ctx context.Context, endpoint string, opts *ListWorkflowRunsOptions) (*WorkflowRuns, *Response, error) {
	u, err := addOptions(endpoint, opts)
	if err != nil {
		return nil, nil, err
	}

	req, err := s.client.NewRequest("GET", u, nil)
	if err != nil {
		return nil, nil, err
	}

	runs := new(WorkflowRuns)
	resp, err := s.client.Do(ctx, req, &runs)
	if err != nil {
		return nil, resp, err
	}

	return runs, resp, nil
}

// ListWorkflowRunsByID lists all workflow runs by workflow ID.
//
// GitHub API docs: https://docs.github.com/en/rest/actions/workflow-runs#list-workflow-runs
func (s *ActionsService) ListWorkflowRunsByID(ctx context.Context, owner, repo string, workflowID int64, opts *ListWorkflowRunsOptions) (*WorkflowRuns, *Response, error) {
	u := fmt.Sprintf("repos/%s/%s/actions/workflows/%v/runs", owner, repo, workflowID)
	return s.listWorkflowRuns(ctx, u, opts)
}

// ListWorkflowRunsByFileName lists all workflow runs by workflow file name.
//
// GitHub API docs: https://docs.github.com/en/rest/actions/workflow-runs#list-workflow-runs
func (s *ActionsService) ListWorkflowRunsByFileName(ctx context.Context, owner, repo, workflowFileName string, opts *ListWorkflowRunsOptions) (*WorkflowRuns, *Response, error) {
	u := fmt.Sprintf("repos/%s/%s/actions/workflows/%v/runs", owner, repo, workflowFileName)
	return s.listWorkflowRuns(ctx, u, opts)
}

// ListRepositoryWorkflowRuns lists all workflow runs for a repository.
//
// GitHub API docs: https://docs.github.com/en/rest/actions/workflow-runs#list-workflow-runs-for-a-repository
func (s *ActionsService) ListRepositoryWorkflowRuns(ctx context.Context, owner, repo string, opts *ListWorkflowRunsOptions) (*WorkflowRuns, *Response, error) {
	u := fmt.Sprintf("repos/%s/%s/actions/runs", owner, repo)
	u, err := addOptions(u, opts)
	if err != nil {
		return nil, nil, err
	}

	req, err := s.client.NewRequest("GET", u, nil)
	if err != nil {
		return nil, nil, err
	}

	runs := new(WorkflowRuns)
	resp, err := s.client.Do(ctx, req, &runs)
	if err != nil {
		return nil, resp, err
	}

	return runs, resp, nil
}

// GetWorkflowRunByID gets a specific workflow run by ID.
//
// GitHub API docs: https://docs.github.com/en/rest/actions/workflow-runs#get-a-workflow-run
func (s *ActionsService) GetWorkflowRunByID(ctx context.Context, owner, repo string, runID int64) (*WorkflowRun, *Response, error) {
	u := fmt.Sprintf("repos/%v/%v/actions/runs/%v", owner, repo, runID)

	req, err := s.client.NewRequest("GET", u, nil)
	if err != nil {
		return nil, nil, err
	}

	run := new(WorkflowRun)
	resp, err := s.client.Do(ctx, req, run)
	if err != nil {
		return nil, resp, err
	}

	return run, resp, nil
}

// GetWorkflowRunAttempt gets a specific workflow run attempt.
//
// GitHub API docs: https://docs.github.com/en/rest/actions/workflow-runs#get-a-workflow-run-attempt
func (s *ActionsService) GetWorkflowRunAttempt(ctx context.Context, owner, repo string, runID int64, attemptNumber int, opts *WorkflowRunAttemptOptions) (*WorkflowRun, *Response, error) {
	u := fmt.Sprintf("repos/%v/%v/actions/runs/%v/attempts/%v", owner, repo, runID, attemptNumber)
	u, err := addOptions(u, opts)
	if err != nil {
		return nil, nil, err
	}

	req, err := s.client.NewRequest("GET", u, nil)
	if err != nil {
		return nil, nil, err
	}

	run := new(WorkflowRun)
	resp, err := s.client.Do(ctx, req, run)
	if err != nil {
		return nil, resp, err
	}

	return run, resp, nil
}

// GetWorkflowRunAttemptLogs gets a redirect URL to download a plain text file of logs for a workflow run for attempt number.
//
// GitHub API docs: https://docs.github.com/en/rest/actions/workflow-runs#download-workflow-run-attempt-logs
func (s *ActionsService) GetWorkflowRunAttemptLogs(ctx context.Context, owner, repo string, runID int64, attemptNumber int, followRedirects bool) (*url.URL, *Response, error) {
	u := fmt.Sprintf("repos/%v/%v/actions/runs/%v/attempts/%v/logs", owner, repo, runID, attemptNumber)

	resp, err := s.client.roundTripWithOptionalFollowRedirect(ctx, u, followRedirects)
	if err != nil {
		return nil, nil, err
	}
	defer resp.Body.Close()

	if resp.StatusCode != http.StatusFound {
		return nil, newResponse(resp), fmt.Errorf("unexpected status code: %s", resp.Status)
	}

	parsedURL, err := url.Parse(resp.Header.Get("Location"))
	return parsedURL, newResponse(resp), err
}

// RerunWorkflowByID re-runs a workflow by ID.
//
// GitHub API docs: https://docs.github.com/en/rest/actions/workflow-runs#re-run-a-workflow
func (s *ActionsService) RerunWorkflowByID(ctx context.Context, owner, repo string, runID int64) (*Response, error) {
	u := fmt.Sprintf("repos/%v/%v/actions/runs/%v/rerun", owner, repo, runID)

	req, err := s.client.NewRequest("POST", u, nil)
	if err != nil {
		return nil, err
	}

	return s.client.Do(ctx, req, nil)
}

// RerunFailedJobsByID re-runs all of the failed jobs and their dependent jobs in a workflow run by ID.
//
// GitHub API docs: https://docs.github.com/en/rest/actions/workflow-runs#re-run-failed-jobs-from-a-workflow-run
func (s *ActionsService) RerunFailedJobsByID(ctx context.Context, owner, repo string, runID int64) (*Response, error) {
	u := fmt.Sprintf("repos/%v/%v/actions/runs/%v/rerun-failed-jobs", owner, repo, runID)

	req, err := s.client.NewRequest("POST", u, nil)
	if err != nil {
		return nil, err
	}

	return s.client.Do(ctx, req, nil)
}

// RerunJobByID re-runs a job and its dependent jobs in a workflow run by ID.
//
// GitHub API docs: https://docs.github.com/en/rest/actions/workflow-runs#re-run-a-job-from-a-workflow-run
func (s *ActionsService) RerunJobByID(ctx context.Context, owner, repo string, jobID int64) (*Response, error) {
	u := fmt.Sprintf("repos/%v/%v/actions/jobs/%v/rerun", owner, repo, jobID)

	req, err := s.client.NewRequest("POST", u, nil)
	if err != nil {
		return nil, err
	}

	return s.client.Do(ctx, req, nil)
}

// CancelWorkflowRunByID cancels a workflow run by ID.
//
// GitHub API docs: https://docs.github.com/en/rest/actions/workflow-runs#cancel-a-workflow-run
func (s *ActionsService) CancelWorkflowRunByID(ctx context.Context, owner, repo string, runID int64) (*Response, error) {
	u := fmt.Sprintf("repos/%v/%v/actions/runs/%v/cancel", owner, repo, runID)

	req, err := s.client.NewRequest("POST", u, nil)
	if err != nil {
		return nil, err
	}

	return s.client.Do(ctx, req, nil)
}

// GetWorkflowRunLogs gets a redirect URL to download a plain text file of logs for a workflow run.
//
// GitHub API docs: https://docs.github.com/en/rest/actions/workflow-runs#download-workflow-run-logs
func (s *ActionsService) GetWorkflowRunLogs(ctx context.Context, owner, repo string, runID int64, followRedirects bool) (*url.URL, *Response, error) {
	u := fmt.Sprintf("repos/%v/%v/actions/runs/%v/logs", owner, repo, runID)

	resp, err := s.client.roundTripWithOptionalFollowRedirect(ctx, u, followRedirects)
	if err != nil {
		return nil, nil, err
	}
	defer resp.Body.Close()

	if resp.StatusCode != http.StatusFound {
		return nil, newResponse(resp), fmt.Errorf("unexpected status code: %s", resp.Status)
	}

	parsedURL, err := url.Parse(resp.Header.Get("Location"))
	return parsedURL, newResponse(resp), err
}

// DeleteWorkflowRun deletes a workflow run by ID.
//
// GitHub API docs: https://docs.github.com/en/rest/actions/workflow-runs#delete-a-workflow-run
func (s *ActionsService) DeleteWorkflowRun(ctx context.Context, owner, repo string, runID int64) (*Response, error) {
	u := fmt.Sprintf("repos/%v/%v/actions/runs/%v", owner, repo, runID)

	req, err := s.client.NewRequest("DELETE", u, nil)
	if err != nil {
		return nil, err
	}

	return s.client.Do(ctx, req, nil)
}

// DeleteWorkflowRunLogs deletes all logs for a workflow run.
//
// GitHub API docs: https://docs.github.com/en/rest/actions/workflow-runs#delete-workflow-run-logs
func (s *ActionsService) DeleteWorkflowRunLogs(ctx context.Context, owner, repo string, runID int64) (*Response, error) {
	u := fmt.Sprintf("repos/%v/%v/actions/runs/%v/logs", owner, repo, runID)

	req, err := s.client.NewRequest("DELETE", u, nil)
	if err != nil {
		return nil, err
	}

	return s.client.Do(ctx, req, nil)
}

// GetWorkflowRunUsageByID gets a specific workflow usage run by run ID in the unit of billable milliseconds.
//
// GitHub API docs: https://docs.github.com/en/rest/actions/workflow-runs#get-workflow-run-usage
func (s *ActionsService) GetWorkflowRunUsageByID(ctx context.Context, owner, repo string, runID int64) (*WorkflowRunUsage, *Response, error) {
	u := fmt.Sprintf("repos/%v/%v/actions/runs/%v/timing", owner, repo, runID)

	req, err := s.client.NewRequest("GET", u, nil)
	if err != nil {
		return nil, nil, err
	}

	workflowRunUsage := new(WorkflowRunUsage)
	resp, err := s.client.Do(ctx, req, workflowRunUsage)
	if err != nil {
		return nil, resp, err
	}

	return workflowRunUsage, resp, nil
}

// PendingDeployments approve or reject pending deployments that are waiting on approval by a required reviewer.
//
// GitHub API docs: https://docs.github.com/en/rest/actions/workflow-runs#review-pending-deployments-for-a-workflow-run
func (s *ActionsService) PendingDeployments(ctx context.Context, owner, repo string, runID int64, request *PendingDeploymentsRequest) ([]*Deployment, *Response, error) {
	u := fmt.Sprintf("repos/%v/%v/actions/runs/%v/pending_deployments", owner, repo, runID)

	req, err := s.client.NewRequest("POST", u, request)
	if err != nil {
		return nil, nil, err
	}

	var deployments []*Deployment
	resp, err := s.client.Do(ctx, req, &deployments)
	if err != nil {
		return nil, resp, err
	}

	return deployments, resp, nil
}