import type { IntegrationAccountRequirement, TriggerDefinition } from "../types"

const SLACK_APP_MENTION_ACCOUNT = {
  connectionOptions: [
    {
      requiredScopes: ["app_mentions:read"],
    },
  ],
  serviceId: "slack",
} as const satisfies IntegrationAccountRequirement

const SLACK_MESSAGE_ACCOUNT = {
  connectionOptions: [
    {
      requiredScopes: [
        {
          requirements: [
            "channels:history",
            "groups:history",
            "im:history",
            "mpim:history",
          ],
          type: "and",
        },
      ],
    },
  ],
  serviceId: "slack",
} as const satisfies IntegrationAccountRequirement

const SLACK_REACTION_ACCOUNT = {
  connectionOptions: [
    {
      requiredScopes: ["reactions:read"],
    },
  ],
  serviceId: "slack",
} as const satisfies IntegrationAccountRequirement

const SLACK_CHANNEL_MEMBER_JOINED_ACCOUNT = slackAccount([
  "channels:read",
  "groups:read",
  "mpim:read",
])
const SLACK_CHANNEL_MEMBER_LEFT_ACCOUNT = slackAccount([
  "channels:read",
  "groups:read",
])
const SLACK_FILE_ACCOUNT = slackAccount(["files:read"])
const SLACK_WORKSPACE_MEMBER_ACCOUNT = slackAccount(["users:read"])
const SLACK_PUBLIC_CHANNEL_ACCOUNT = slackAccount(["channels:read"])
const SLACK_SHARED_CHANNEL_ACCOUNT = slackAccount([
  "channels:read",
  "groups:read",
])
const SLACK_PIN_ACCOUNT = slackAccount(["pins:read"])
const SLACK_EVENT_ACCOUNT = slackAccount([
  "app_mentions:read",
  "channels:history",
  "groups:history",
  "im:history",
  "mpim:history",
  "reactions:read",
  "channels:read",
  "groups:read",
  "mpim:read",
  "files:read",
  "users:read",
  "pins:read",
])

export const slackTriggerDefinitions = {
  slackAppMentioned: {
    account: SLACK_APP_MENTION_ACCOUNT,
    type: "slack.app.mentioned",
  },
  slackMessagePosted: {
    account: SLACK_MESSAGE_ACCOUNT,
    type: "slack.message.posted",
  },
  slackChannelCreated: {
    account: SLACK_PUBLIC_CHANNEL_ACCOUNT,
    type: "slack.channel.created",
  },
  slackChannelMemberJoined: {
    account: SLACK_CHANNEL_MEMBER_JOINED_ACCOUNT,
    type: "slack.channel.member.joined",
  },
  slackChannelMemberLeft: {
    account: SLACK_CHANNEL_MEMBER_LEFT_ACCOUNT,
    type: "slack.channel.member.left",
  },
  slackChannelRenamed: {
    account: SLACK_PUBLIC_CHANNEL_ACCOUNT,
    type: "slack.channel.renamed",
  },
  slackChannelShared: {
    account: SLACK_SHARED_CHANNEL_ACCOUNT,
    type: "slack.channel.shared",
  },
  slackChannelUnshared: {
    account: SLACK_SHARED_CHANNEL_ACCOUNT,
    type: "slack.channel.unshared",
  },
  slackEvent: {
    account: SLACK_EVENT_ACCOUNT,
    type: "slack.event.received",
  },
  slackFileCreated: {
    account: SLACK_FILE_ACCOUNT,
    type: "slack.file.created",
  },
  slackFileDeleted: {
    account: SLACK_FILE_ACCOUNT,
    type: "slack.file.deleted",
  },
  slackFileShared: {
    account: SLACK_FILE_ACCOUNT,
    type: "slack.file.shared",
  },
  slackMessageChanged: {
    account: SLACK_MESSAGE_ACCOUNT,
    type: "slack.message.changed",
  },
  slackMessageDeleted: {
    account: SLACK_MESSAGE_ACCOUNT,
    type: "slack.message.deleted",
  },
  slackPinAdded: {
    account: SLACK_PIN_ACCOUNT,
    type: "slack.pin.added",
  },
  slackPinRemoved: {
    account: SLACK_PIN_ACCOUNT,
    type: "slack.pin.removed",
  },
  slackReactionAdded: {
    account: SLACK_REACTION_ACCOUNT,
    type: "slack.reaction.added",
  },
  slackReactionEvent: {
    account: SLACK_REACTION_ACCOUNT,
    type: "slack.reaction.event",
  },
  slackReactionRemoved: {
    account: SLACK_REACTION_ACCOUNT,
    type: "slack.reaction.removed",
  },
  slackThreadReplyPosted: {
    account: SLACK_MESSAGE_ACCOUNT,
    type: "slack.thread.reply.posted",
  },
  slackWorkspaceMemberChanged: {
    account: SLACK_WORKSPACE_MEMBER_ACCOUNT,
    type: "slack.workspace.member.changed",
  },
  slackWorkspaceMemberJoined: {
    account: SLACK_WORKSPACE_MEMBER_ACCOUNT,
    type: "slack.workspace.member.joined",
  },
} as const satisfies Record<string, TriggerDefinition>

/**
 * Builds one bot-token account requirement from its least-privilege scopes.
 *
 * @param scopes - Slack bot OAuth scopes required by the trigger.
 */
function slackAccount(scopes: readonly string[]) {
  return {
    connectionOptions: [{ requiredScopes: [...scopes] }],
    serviceId: "slack",
  } as const satisfies IntegrationAccountRequirement
}