Add slack integration

Signed-off-by: Sacha Al Himdani <sacha@getprobo.com>

pkg/coredata/slack_message.go

@@ -0,0 +1,143 @@
+// Copyright (c) 2025 Probo Inc <hello@getprobo.com>.
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+// AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+// OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+// PERFORMANCE OF THIS SOFTWARE.
+
+package coredata
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"time"
+
+	"github.com/getprobo/probo/pkg/gid"
+	"github.com/jackc/pgx/v5"
+	"go.gearno.de/kit/pg"
+)
+
+type (
+	SlackMessage struct {
+		ID             gid.GID    `db:"id"`
+		OrganizationID gid.GID    `db:"organization_id"`
+		Body           string     `db:"body"`
+		CreatedAt      time.Time  `db:"created_at"`
+		UpdatedAt      time.Time  `db:"updated_at"`
+		SentAt         *time.Time `db:"sent_at"`
+		Error          *string    `db:"error"`
+	}
+
+	ErrNoUnsentSlackMessage struct{}
+)
+
+func (e ErrNoUnsentSlackMessage) Error() string {
+	return "no unsent slack message found"
+}
+
+func NewSlackMessage(
+	scope Scoper,
+	organizationID gid.GID,
+	body string,
+) *SlackMessage {
+	now := time.Now()
+	return &SlackMessage{
+		ID:             gid.New(scope.GetTenantID(), SlackMessageEntityType),
+		OrganizationID: organizationID,
+		Body:           body,
+		CreatedAt:      now,
+		UpdatedAt:      now,
+	}
+}
+
+func (s *SlackMessage) Insert(
+	ctx context.Context,
+	conn pg.Conn,
+	scope Scoper,
+) error {
+	q := `
+INSERT INTO slack_messages (id, tenant_id, organization_id, body, created_at, updated_at)
+VALUES (@id, @tenant_id, @organization_id, @body, @created_at, @updated_at)
+	`
+
+	args := pgx.StrictNamedArgs{
+		"id":              s.ID,
+		"tenant_id":       scope.GetTenantID(),
+		"organization_id": s.OrganizationID,
+		"body":            s.Body,
+		"created_at":      s.CreatedAt,
+		"updated_at":      s.UpdatedAt,
+	}
+
+	_, err := conn.Exec(ctx, q, args)
+	if err != nil {
+		return fmt.Errorf("cannot insert slack message: %w", err)
+	}
+
+	return nil
+}
+
+func (s *SlackMessage) LoadNextUnsentForUpdate(
+	ctx context.Context,
+	conn pg.Conn,
+) error {
+	q := `
+SELECT id, organization_id, body, created_at, updated_at, sent_at, error
+FROM slack_messages
+WHERE sent_at IS NULL AND error IS NULL
+ORDER BY created_at ASC
+LIMIT 1
+FOR UPDATE
+	`
+
+	rows, err := conn.Query(ctx, q)
+	if err != nil {
+		return fmt.Errorf("cannot query slack messages: %w", err)
+	}
+
+	message, err := pgx.CollectExactlyOneRow(rows, pgx.RowToStructByName[SlackMessage])
+	if err != nil {
+		if errors.Is(err, pgx.ErrNoRows) {
+			return ErrNoUnsentSlackMessage{}
+		}
+
+		return fmt.Errorf("cannot collect slack message: %w", err)
+	}
+
+	*s = message
+
+	return nil
+}
+
+func (s *SlackMessage) Update(
+	ctx context.Context,
+	conn pg.Conn,
+) error {
+	q := `
+UPDATE slack_messages
+SET sent_at = @sent_at, updated_at = @updated_at, error = @error
+WHERE id = @id
+	`
+
+	args := pgx.StrictNamedArgs{
+		"id":         s.ID,
+		"sent_at":    s.SentAt,
+		"updated_at": s.UpdatedAt,
+		"error":      s.Error,
+	}
+
+	_, err := conn.Exec(ctx, q, args)
+	if err != nil {
+		return fmt.Errorf("cannot update slack message: %w", err)
+	}
+
+	return nil
+}