package db

import (
	"context"
	"encoding/json"
	"fmt"
	"testing"

	"github.com/bluesky-social/indigo/atproto/syntax"
	"tangled.org/core/api/tangled"
	"tangled.org/core/spindle/models"
)

func TestDeleteReposByDid(t *testing.T) {
	d := newTestDB(t)
	repoDid := syntax.DID("did:plc:repo1")
	other := syntax.DID("did:plc:repo2")

	for _, r := range []Repo{
		{Knot: "k1", Owner: syntax.DID("did:plc:o1"), Rkey: syntax.RecordKey("a"), RepoDid: repoDid},
		{Knot: "k2", Owner: syntax.DID("did:plc:o1"), Rkey: syntax.RecordKey("b"), RepoDid: repoDid},
		{Knot: "k1", Owner: syntax.DID("did:plc:o2"), Rkey: syntax.RecordKey("c"), RepoDid: other},
	} {
		if err := d.AddRepo(r); err != nil {
			t.Fatal(err)
		}
	}

	repos, err := d.ReposByDid(repoDid)
	if err != nil {
		t.Fatal(err)
	}
	if len(repos) != 2 {
		t.Fatalf("expected 2 sibling rows, got %d", len(repos))
	}

	if err := d.DeleteReposByDid(repoDid); err != nil {
		t.Fatal(err)
	}
	if repos, _ := d.ReposByDid(repoDid); len(repos) != 0 {
		t.Fatalf("expected rows gone, got %d", len(repos))
	}
	if repos, _ := d.ReposByDid(other); len(repos) != 1 {
		t.Fatalf("expected other repo untouched, got %d", len(repos))
	}
}

func TestDeleteJobsByRepo(t *testing.T) {
	d := newTestDB(t)
	ctx := context.Background()
	pid := models.PipelineId("p1")
	if err := d.EnqueueJob(ctx, "did:plc:repo1", pid, nil, tangled.Pipeline{}, "", ""); err != nil {
		t.Fatal(err)
	}
	if err := d.EnqueueJob(ctx, "did:plc:repo2", pid, nil, tangled.Pipeline{}, "", ""); err != nil {
		t.Fatal(err)
	}

	if err := d.DeleteJobsByRepo(ctx, "did:plc:repo1"); err != nil {
		t.Fatal(err)
	}
	var n int
	if err := d.QueryRow(`select count(*) from jobs`).Scan(&n); err != nil {
		t.Fatal(err)
	}
	if n != 1 {
		t.Fatalf("expected 1 job left, got %d", n)
	}
	if err := d.QueryRow(`select count(*) from jobs where repo_did = 'did:plc:repo2'`).Scan(&n); err != nil || n != 1 {
		t.Fatalf("expected surviving job to be repo2's, count=%d err=%v", n, err)
	}
}

func TestDeleteMillLeasesByRepo(t *testing.T) {
	d := newTestDB(t)
	for _, l := range []MillLease{
		{LeaseID: "l1", NodeID: "n1", Epoch: "e1", Engine: "microvm", PipelineID: "r1", Workflow: "w1", State: "active", RepoDID: "did:plc:repo1"},
		{LeaseID: "l2", NodeID: "n1", Epoch: "e1", Engine: "microvm", PipelineID: "r1", Workflow: "w2", State: "active", RepoDID: "did:plc:repo1"},
		{LeaseID: "l3", NodeID: "n1", Epoch: "e1", Engine: "microvm", PipelineID: "r9", Workflow: "w1", State: "active", RepoDID: "did:plc:repo2"},
	} {
		if err := d.SaveMillLease(l); err != nil {
			t.Fatal(err)
		}
		if _, err := d.Exec(`insert into mill_artifacts (lease_id, repo_did, pipeline_id, workflow, ref, hash) values (?, ?, ?, ?, ?, ?)`, l.LeaseID, l.RepoDID, l.PipelineID, l.Workflow, "logs/"+l.LeaseID+".log", "h"); err != nil {
			t.Fatal(err)
		}
		if _, err := d.Exec(`insert into executor_pending_artifacts (lease_id, workflow, status, ref, hash) values (?, ?, 'done', 'r', 'h')`, l.LeaseID, l.Workflow); err != nil {
			t.Fatal(err)
		}
	}

	removed, err := d.DeleteMillLeasesByRepo("did:plc:repo1")
	if err != nil {
		t.Fatal(err)
	}
	if len(removed) != 2 {
		t.Fatalf("expected 2 lease ids, got %v", removed)
	}

	leases, err := d.ListMillLeases()
	if err != nil {
		t.Fatal(err)
	}
	if len(leases) != 1 || leases[0].LeaseID != "l3" {
		t.Fatalf("expected only l3 left, got %+v", leases)
	}
	if err := d.DeleteArtifactRefsByRepo("did:plc:repo1"); err != nil {
		t.Fatal(err)
	}
	var n int
	if err := d.QueryRow(`select count(*) from mill_artifacts`).Scan(&n); err != nil || n != 1 {
		t.Fatalf("expected 1 artifact row left, got %d err %v", n, err)
	}
	if err := d.QueryRow(`select count(*) from executor_pending_artifacts`).Scan(&n); err != nil || n != 1 {
		t.Fatalf("expected 1 pending artifact row left, got %d err %v", n, err)
	}
}

func TestDeleteQuotaStateForRepo(t *testing.T) {
	d := newTestDB(t)
	ctx := context.Background()
	repo := "did:plc:repo1"
	other := "did:plc:repo2"

	ins := []string{
		fmt.Sprintf(`insert into quota_reservations (id, resource, kind, key, amount, repo_did, owner_did, phase, created_at) values ('r1', 'compute', 'generic', 'k', 1, '%s', 'did:plc:o1', 'active', 1)`, repo),
		fmt.Sprintf(`insert into quota_reservations (id, resource, kind, key, amount, repo_did, owner_did, phase, created_at) values ('r2', 'compute', 'generic', 'k', 1, '%s', 'did:plc:o1', 'active', 1)`, other),
		fmt.Sprintf(`insert into quota_allocations (repo_did, resource, kind, key, amount) values ('%s', 'compute', 'generic', 'k', 2)`, repo),
		fmt.Sprintf(`insert into quota_allocations (repo_did, resource, kind, key, amount) values ('%s', 'compute', 'generic', 'k', 2)`, other),
		fmt.Sprintf(`insert into quota_limits (did, resource, max_amount) values ('%s', 'compute', 5)`, repo),
		`insert into quota_limits (did, resource, max_amount) values ('did:plc:o1', 'compute', 5)`,
		fmt.Sprintf(`insert into quota_repo_owners (repo_did, owner_did) values ('%s', 'did:plc:o1')`, repo),
	}
	for _, q := range ins {
		if _, err := d.Exec(q); err != nil {
			t.Fatalf("fixture %q: %v", q, err)
		}
	}

	if err := d.DeleteQuotaStateForRepo(ctx, repo); err != nil {
		t.Fatal(err)
	}

	checks := []struct {
		q, want string
	}{
		{`select id from quota_reservations`, "r2"},
		{`select repo_did from quota_allocations`, other},
		{`select did from quota_limits`, "did:plc:o1"},
	}
	for _, c := range checks {
		var got string
		if err := d.QueryRow(c.q).Scan(&got); err != nil {
			t.Fatalf("%s: %v", c.q, err)
		}
		if got != c.want {
			t.Fatalf("%s: surviving row = %s, want %s", c.q, got, c.want)
		}
	}
	var n int
	if err := d.QueryRow(`select count(*) from quota_repo_owners`).Scan(&n); err != nil || n != 0 {
		t.Fatalf("expected repo owner rows gone, got %d err %v", n, err)
	}
}

func TestDeletePipelinesByRepo(t *testing.T) {
	d := newTestDB(t)
	repo := "did:plc:repo1"
	other := "did:plc:repo2"

	insertPipeline := func(rkey, repoDid string) {
		p := &tangled.CiPipeline{Id: rkey, Repo: repoDid}
		payload, err := json.Marshal(p)
		if err != nil {
			t.Fatal(err)
		}
		if _, err := d.Exec(`insert into pipelines (pipeline_id, repo_did, commit_sha, kind, payload) values (?, ?, '', '', ?)`, rkey, repoDid, string(payload)); err != nil {
			t.Fatal(err)
		}
	}
	insertPipeline("p1", repo)
	insertPipeline("p2", other)
	for _, rkey := range []string{"p1", "p2", "p9"} {
		if _, err := d.Exec(`insert into workflow_statuses (pipeline_id, workflow, status, created_at) values (?, 'build', 'pending', 'now')`, rkey); err != nil {
			t.Fatal(err)
		}
	}

	if err := d.DeletePipelinesByRepo(repo, []models.PipelineId{"p9"}); err != nil {
		t.Fatal(err)
	}

	var n int
	if err := d.QueryRow(`select count(*) from pipelines where pipeline_id = 'p1'`).Scan(&n); err != nil || n != 0 {
		t.Fatalf("expected repo pipeline gone, got %d err %v", n, err)
	}
	if err := d.QueryRow(`select count(*) from workflow_statuses where pipeline_id in ('p1', 'p9')`).Scan(&n); err != nil || n != 0 {
		t.Fatalf("expected wiped statuses gone, got %d err %v", n, err)
	}
	if err := d.QueryRow(`select count(*) from pipelines where pipeline_id = 'p2'`).Scan(&n); err != nil || n != 1 {
		t.Fatalf("expected other pipeline to survive, got %d err %v", n, err)
	}
}