package blog

import (
	"context"
	"embed"
	"io/fs"

	"git.golem15.com/golem15/summercms/docs/examples/blog/console"
	"git.golem15.com/golem15/summercms/modules/backpack"
	"git.golem15.com/golem15/summercms/modules/bonfire"
	"git.golem15.com/golem15/summercms/modules/lagoon"
	"git.golem15.com/golem15/summercms/modules/pact"
	"git.golem15.com/golem15/summercms/modules/party"
	"github.com/go-gormigrate/gormigrate/v2"
	"gorm.io/gorm"
)

var (
	_ pact.HasConfig           = (*Plugin)(nil)
	_ pact.HasLang             = (*Plugin)(nil)
	_ pact.HasMailTemplates    = (*Plugin)(nil)
	_ pact.HasModels           = (*Plugin)(nil)
	_ pact.HasMigrations       = (*Plugin)(nil)
	_ pact.HasCommands         = (*Plugin)(nil)
	_ pact.HasJobs             = (*Plugin)(nil)
	_ pact.HasAdminControllers = (*Plugin)(nil)
	_ pact.AdminAssets         = (*Plugin)(nil)
	_ pact.HasPermissions      = (*Plugin)(nil)
	_ pact.HasNavigation       = (*Plugin)(nil)
)

//go:embed config
var configFS embed.FS

//go:embed lang
var langFS embed.FS

//go:embed views/mail
var mailFS embed.FS

//go:embed controllers/*/*.yaml models/*/*.yaml
var adminFS embed.FS

// Plugin is the acme.blog plugin, the Go form of Plugin.php.
type Plugin struct {
	app *backpack.App
}

func (p *Plugin) ID() string         { return "acme.blog" }
func (p *Plugin) Requires() []string { return nil }

func (p *Plugin) Register(*backpack.App) error { return nil }

// Boot keeps the application, so route handlers and commands can reach its
// services, such as the database, when they run.
func (p *Plugin) Boot(app *backpack.App) error {
	p.app = app
	return nil
}

func (p *Plugin) ConfigFS() fs.FS { return configFS }
func (p *Plugin) LangFS() fs.FS   { return langFS }

func (p *Plugin) MailTemplatesFS() fs.FS         { return mailFS }
func (p *Plugin) MailTemplates() []string        { return nil }
func (p *Plugin) MailLayouts() map[string]string { return nil }

func (p *Plugin) Models() []any                       { return generatedModels() }
func (p *Plugin) Migrations() []*gormigrate.Migration { return generatedMigrations() }
func (p *Plugin) Jobs() []pact.Job                    { return generatedJobs() }
func (p *Plugin) AdminControllers() []pact.AdminController {
	return generatedAdminControllers()
}

// Commands returns the generated commands plus blog:publish, which needs the
// database and so is built here with the plugin's withDB.
func (p *Plugin) Commands() []bonfire.Command {
	return append(generatedCommands(), console.PublishCommand(p.withDB))
}

// AdminFS is the admin YAML the controllers read: controllers/posts and
// models/posts.
func (p *Plugin) AdminFS() fs.FS { return adminFS }

// Permissions replaces registerPermissions().
func (p *Plugin) Permissions() []pact.Permission {
	return []pact.Permission{{
		Code:  "acme.blog.access_posts",
		Tab:   "acme.blog::lang.plugin.name",
		Label: "acme.blog::lang.permissions.access_posts",
	}}
}

// Navigation replaces registerNavigation().
func (p *Plugin) Navigation() []pact.NavigationItem {
	return []pact.NavigationItem{{
		Code:        "blog",
		Label:       "acme.blog::lang.plugin.name",
		Icon:        "icon-pencil",
		Permissions: []string{"acme.blog.access_posts"},
		Controller:  "acme.blog.posts",
	}}
}

// withDB runs fn with the application's database: the one the serve command
// published, or, when a console command runs, one opened from the config for
// the duration of fn.
func (p *Plugin) withDB(ctx context.Context, fn func(*gorm.DB) error) error {
	if gdb, ok := p.app.Lookup[*gorm.DB](); ok && gdb != nil {
		return fn(gdb)
	}
	sqlDB, gdb, err := lagoon.OpenFromApp(ctx, p.app)
	if err != nil {
		return err
	}
	defer sqlDB.Close()
	return fn(gdb)
}

func init() {
	party.Register(&Plugin{})
}