package main

import (
	"context"
	"encoding/json"
	"fmt"
	"net/http"
	"os"

	_ "github.com/joho/godotenv/autoload"

	"tangled.org/bnewbold.net/atwork-cli/placeatwork"

	"github.com/bluesky-social/indigo/api/agnostic"
	comatproto "github.com/bluesky-social/indigo/api/atproto"
	appbsky "github.com/bluesky-social/indigo/api/bsky"
	"github.com/bluesky-social/indigo/atproto/atclient"
	"github.com/bluesky-social/indigo/atproto/identity"
	"github.com/bluesky-social/indigo/atproto/syntax"
	"github.com/urfave/cli/v3"
)

func main() {
	app := cli.Command{
		Name:  "atwork-cli",
		Usage: "example CLI project for at://work lexicons",
		Commands: []*cli.Command{
			&cli.Command{
				Name:      "search",
				Usage:     "queries public API for listings",
				ArgsUsage: "<query>",
				Flags: []cli.Flag{
					&cli.StringFlag{
						Name:  "host",
						Value: "https://atwork.place",
					},
				},
				Action: runSearch,
			},
			&cli.Command{
				Name:  "import-bsky-profile",
				Usage: "creates a new atwork profile using Bluesky profile data",
				Flags: []cli.Flag{
					&cli.StringFlag{
						Name:    "username",
						Sources: cli.EnvVars("ATP_USERNAME"),
					},
					&cli.StringFlag{
						Name:    "password",
						Sources: cli.EnvVars("ATP_PASSWORD"),
					},
				},
				Action: runImportProfile,
			},
			&cli.Command{
				Name:      "upload-resume",
				Usage:     "uploads resume PDF and adds to atwork profile",
				ArgsUsage: "<pdf-path>",
				Flags: []cli.Flag{
					&cli.StringFlag{
						Name:    "username",
						Sources: cli.EnvVars("ATP_USERNAME"),
					},
					&cli.StringFlag{
						Name:    "password",
						Sources: cli.EnvVars("ATP_PASSWORD"),
					},
				},
				Action: runUploadResume,
			},
		},
	}

	if err := app.Run(context.Background(), os.Args); err != nil {
		fmt.Fprintf(os.Stderr, "error: %v\n", err)
		os.Exit(1)
	}
}

func runSearch(ctx context.Context, cmd *cli.Command) error {
	if !cmd.Args().Present() {
		return fmt.Errorf("requires a search query")
	}
	searchQuery := cmd.Args().First()

	c := atclient.NewAPIClient(cmd.String("host"))

	resp, err := placeatwork.SearchListings(ctx, c, searchQuery)
	if err != nil {
		return err
	}

	for _, hit := range resp.Listings {
		if hit.Value == nil {
			continue
		}
		listing := *hit.Value
		aturi, err := syntax.ParseATURI(hit.Uri)
		if err != nil {
			continue
		}
		fmt.Printf("%s: %s\n", aturi.Authority(), listing.Title)
		if listing.ApplyLink != nil {
			fmt.Printf("\tApply: %s\n", *listing.ApplyLink)
		}
	}

	return nil
}

func runImportProfile(ctx context.Context, cmd *cli.Command) error {

	if !cmd.IsSet("username") || !cmd.IsSet("password") {
		return fmt.Errorf("authentication required (username and password)")
	}

	username, err := syntax.ParseAtIdentifier(cmd.String("username"))
	if err != nil {
		return fmt.Errorf("invalid username: %w", err)
	}
	dir := identity.DefaultDirectory()

	c, err := atclient.LoginWithPassword(ctx, dir, *username, cmd.String("password"), "", nil)
	if err != nil {
		return err
	}

	// fetch existing bsky profile
	resp, err := agnostic.RepoGetRecord(ctx, c, "", "app.bsky.actor.profile", c.AccountDID.String(), "self")
	if err != nil {
		return fmt.Errorf("failed fetching bsky profile record: %s", err)
	}

	var bskyProfile appbsky.ActorProfile
	if err := json.Unmarshal(*resp.Value, &bskyProfile); err != nil {
		return err
	}

	// create new atwork profile record
	atworkProfile := placeatwork.Profile{
		LexiconTypeID: "place.atwork.profile",
		Avatar:        bskyProfile.Avatar,
		Banner:        bskyProfile.Banner,
		Description:   bskyProfile.Description,
		DisplayName:   bskyProfile.DisplayName,
	}

	// create profile record (fails if one already exists)
	if err := c.Post(ctx, syntax.NSID("com.atproto.repo.createRecord"), map[string]any{
		"repo":       c.AccountDID,
		"collection": atworkProfile.LexiconTypeID,
		"rkey":       "self",
		"record":     atworkProfile,
	}, nil); err != nil {
		return err
	}

	return nil
}

func runUploadResume(ctx context.Context, cmd *cli.Command) error {

	if !cmd.Args().Present() {
		return fmt.Errorf("requires resume PDF path as argument")
	}
	resumePath := cmd.Args().First()

	if !cmd.IsSet("username") || !cmd.IsSet("password") {
		return fmt.Errorf("authentication required (username and password)")
	}

	username, err := syntax.ParseAtIdentifier(cmd.String("username"))
	if err != nil {
		return fmt.Errorf("invalid username: %w", err)
	}
	dir := identity.DefaultDirectory()

	c, err := atclient.LoginWithPassword(ctx, dir, *username, cmd.String("password"), "", nil)
	if err != nil {
		return err
	}

	// fetch existing at://work profile
	getResp, err := agnostic.RepoGetRecord(ctx, c, "", "place.atwork.profile", c.AccountDID.String(), "self")
	if err != nil {
		return fmt.Errorf("failed fetching profile record: %s", err)
	}

	var atworkProfile placeatwork.Profile
	if err := json.Unmarshal(*getResp.Value, &atworkProfile); err != nil {
		return err
	}

	// upload resume PDF as blob
	resumeFile, err := os.Open(resumePath)
	if err != nil {
		return err
	}
	defer resumeFile.Close()

	// update record
	req := atclient.NewAPIRequest(http.MethodPost, syntax.NSID("com.atproto.repo.uploadBlob"), resumeFile)
	req.Headers.Set("Accept", "application/json")
	req.Headers.Set("Content-Type", "application/pdf")

	resp, err := c.Do(ctx, req)
	if err != nil {
		return err
	}
	defer resp.Body.Close()

	if !(resp.StatusCode >= 200 && resp.StatusCode < 300) {
		return fmt.Errorf("blob upload failed")
	}

	var blobResp comatproto.RepoUploadBlob_Output
	if err := json.NewDecoder(resp.Body).Decode(&blobResp); err != nil {
		return fmt.Errorf("failed decoding JSON response body: %w", err)
	}

	// update profile with blob ref
	atworkProfile.Resume = blobResp.Blob
	if err := c.Post(ctx, syntax.NSID("com.atproto.repo.putRecord"), map[string]any{
		"repo":       c.AccountDID,
		"collection": atworkProfile.LexiconTypeID,
		"rkey":       "self",
		"record":     atworkProfile,
	}, nil); err != nil {
		return err
	}

	return nil
}