package models

import (
	"time"

	"gorm.io/gorm"
)

// The states of a crawl (UI-SPEC C24).
const (
	CrawlQueued    = "queued"
	CrawlRunning   = "running"
	CrawlFinished  = "finished"
	CrawlFailed    = "failed"
	CrawlCancelled = "cancelled"
)

// CrawlStatuses lists the states in filter order.
var CrawlStatuses = []string{CrawlQueued, CrawlRunning, CrawlFinished, CrawlFailed, CrawlCancelled}

// What started a crawl.
const (
	TriggerAdmin    = "admin"
	TriggerSchedule = "schedule"
	TriggerMCP      = "mcp"
)

// The states of the rendered comparison of a crawl (P33-55).
const (
	RenderSkipped = "skipped"
	RenderDone    = "done"
	RenderFailed  = "failed"
)

// Crawl is one run of the site audit's crawler on golem15_seo_crawls
// (D-14, P33-37): its state, what started it and who, the site address,
// the page limit, the pages fetched and whether the limit stopped it, the
// error of a failed run, the state of the rendered comparison, the conga
// job and its times.
type Crawl struct {
	ID           uint       `gorm:"column:id;primaryKey"`
	Status       string     `gorm:"column:status"`
	Trigger      string     `gorm:"column:trigger"`
	TriggerName  string     `gorm:"column:trigger_name"`
	Site         string     `gorm:"column:site"`
	MaxPages     int        `gorm:"column:max_pages"`
	Pages        int        `gorm:"column:pages"`
	LimitHit     bool       `gorm:"column:limit_hit"`
	Error        string     `gorm:"column:error"`
	RenderStatus string     `gorm:"column:render_status"`
	RenderPages  int        `gorm:"column:render_pages"`
	RenderNote   string     `gorm:"column:render_note"`
	CancelledBy  string     `gorm:"column:cancelled_by"`
	JobID        *uint      `gorm:"column:job_id"`
	StartedAt    *time.Time `gorm:"column:started_at"`
	FinishedAt   *time.Time `gorm:"column:finished_at"`
	CreatedAt    *time.Time `gorm:"column:created_at"`
	// The list's values, filled by the Crawls controller's
	// ListExtendRecords and never saved.
	IssuesCell   string `gorm:"-:all;column:issues"`
	PagesCell    string `gorm:"-:all;column:pages_cell"`
	DurationCell string `gorm:"-:all;column:duration"`
	TriggerCell  string `gorm:"-:all;column:trigger_cell"`
}

func (Crawl) TableName() string { return "golem15_seo_crawls" }

// MorphName names a crawl in the admin.
func (Crawl) MorphName() string { return `Golem15\SEO\Models\Crawl` }

// Fillable is empty: crawls are written by the crawler only.
func (Crawl) Fillable() []string { return []string{} }

// Rules is empty: nothing is edited.
func (Crawl) Rules() map[string]string { return map[string]string{} }

// Active reports whether the crawl is queued or running.
func (c Crawl) Active() bool { return c.Status == CrawlQueued || c.Status == CrawlRunning }

// The Crawls list's filter scope.
const FilterCrawlStatus = "FilterCrawlStatus"

// FilterScopes lists the Crawls list's filter scopes.
func (Crawl) FilterScopes() []string { return []string{FilterCrawlStatus} }

// FilterScope narrows the Crawls list to one state; an unknown value
// matches nothing.
func (Crawl) FilterScope(name string, db *gorm.DB, value any) *gorm.DB {
	if db == nil || name != FilterCrawlStatus {
		return db
	}
	s, _ := value.(string)
	for _, st := range CrawlStatuses {
		if s == st {
			return db.Where("golem15_seo_crawls.status = ?", s)
		}
	}
	return db.Where("1 = 0")
}

func init() {
	Register(Crawl{})
}