package main

import (
	"context"
	"fmt"
	"time"

	"github.com/szabadpalya/api/internal/store"
	"github.com/szabadpalya/api/test/seeddata"
)

// reset clears the campaign side of the database. Relations cascade, so
// campaigns and owners are enough; users go too because the seed's
// pledges are anonymous and any account left behind would be an orphan.
func (s *seeder) reset(ctx context.Context) error {
	for _, table := range []string{"Pledge", "Campaign", "Owner", "User"} {
		if _, err := s.pool.Exec(ctx, fmt.Sprintf(`DELETE FROM %q`, table)); err != nil {
			return err
		}
	}
	return nil
}

// campaign writes one fixture campaign and returns how many pledges it created
// and what they add up to.
func (s *seeder) campaign(ctx context.Context, c seeddata.Campaign) (int, int, error) {
	endsAt, err := s.store.EndOfDay(c.EndsAt)
	if err != nil {
		return 0, 0, err
	}

	tx, err := s.pool.Begin(ctx)
	if err != nil {
		return 0, 0, err
	}
	defer tx.Rollback(ctx)

	var ownerID string
	if err := tx.QueryRow(ctx, `
		INSERT INTO "Owner" ("id","slug","name","initials","location","blurb","avatarUrl","approved")
		VALUES ($1,$2,$3,$4,$5,$6,NULLIF($7,''),true)
		ON CONFLICT ("slug") DO UPDATE SET "name" = EXCLUDED."name"
		RETURNING "id"`,
		store.NewID(), c.Owner.Slug, c.Owner.Name, c.Owner.Initials, c.Owner.Location, c.Owner.Blurb,
		c.Owner.AvatarURL,
	).Scan(&ownerID); err != nil {
		return 0, 0, err
	}

	campaignID := store.NewID()
	if _, err := tx.Exec(ctx, `
		INSERT INTO "Campaign" ("id","slug","title","category","summary","art","goalAmount",
		                        "endsAt","status","ownerId")
		VALUES ($1,$2,$3,$4,$5,$6,$7,$8,$9::"CampaignStatus",$10)`,
		campaignID, c.Slug, c.Title, c.Category, c.Summary, c.Art, c.GoalAmount,
		endsAt, c.Status, ownerID); err != nil {
		return 0, 0, err
	}

	for i, sec := range c.Story {
		if _, err := tx.Exec(ctx, `
			INSERT INTO "StorySection" ("id","campaignId","heading","body","position")
			VALUES ($1,$2,$3,$4,$5)`,
			store.NewID(), campaignID, sec.Heading, sec.Body, i); err != nil {
			return 0, 0, err
		}
	}

	// Was the goal reached? That decides whether physical tiers were charged.
	raised := 0
	for _, t := range c.Tiers {
		raised += t.Price * t.Backers
	}
	goalReached := raised >= c.GoalAmount

	pledgeCount := 0
	now := time.Now()
	for i, t := range c.Tiers {
		var delivery *time.Time
		if t.EstimatedDelivery != "" {
			d, err := s.store.EndOfDay(t.EstimatedDelivery)
			if err != nil {
				return 0, 0, err
			}
			delivery = &d
		}
		tierID := store.NewID()
		if _, err := tx.Exec(ctx, `
			INSERT INTO "RewardTier" ("id","campaignId","type","price","listPrice","title",
			                          "includes","inventoryLimit","estimatedDelivery",
			                          "featured","position")
			VALUES ($1,$2,$3::"TierType",$4,$5,$6,$7,$8,$9,$10,$11)`,
			tierID, campaignID, t.Type, t.Price, t.ListPrice, t.Title, t.Includes,
			t.InventoryLimit, delivery, t.Featured, i); err != nil {
			return 0, 0, err
		}

		// A physical tier on a campaign that missed its goal is still only
		// authorized — that is the fulfillment guard, visible in the fixture.
		held := t.Type == "PHYSICAL" && !goalReached
		status := "CAPTURED"
		var capturedAt *time.Time
		if held {
			status = "AUTHORIZED"
		} else {
			capturedAt = &now
		}

		for n := 0; n < t.Backers; n++ {
			pledgeCount++
			if _, err := tx.Exec(ctx, `
				INSERT INTO "Pledge" ("id","campaignId","tierId","backerEmail","quantity",
				                      "amount","status","capturedAt")
				VALUES ($1,$2,$3,$4,1,$5,$6::"PledgeStatus",$7)`,
				store.NewID(), campaignID, tierID,
				fmt.Sprintf("tamogato-%s@example.invalid", store.NewID()),
				t.Price, status, capturedAt); err != nil {
				return 0, 0, err
			}
		}
	}

	for _, u := range c.Updates {
		if _, err := tx.Exec(ctx, `
			INSERT INTO "CampaignUpdate" ("id","campaignId","title","body")
			VALUES ($1,$2,$3,$4)`, store.NewID(), campaignID, u.Title, u.Body); err != nil {
			return 0, 0, err
		}
	}
	for _, m := range c.Comments {
		if _, err := tx.Exec(ctx, `
			INSERT INTO "Comment" ("id","campaignId","authorName","body")
			VALUES ($1,$2,$3,$4)`, store.NewID(), campaignID, m.AuthorName, m.Body); err != nil {
			return 0, 0, err
		}
	}

	return pledgeCount, raised, tx.Commit(ctx)
}