import { CollectionConfig } from "payload";
import { requirePermission } from "@/utils/access-control/hasPermission";

export const Factions: CollectionConfig = {
  slug: "factions",
  admin: {
    group: "Intelligence",
    useAsTitle: "name",
  },
  access: {
    create: requirePermission("factions:create"),
    update: requirePermission("factions:update"),
    delete: requirePermission("factions:delete"),
    read: ({ req }) => !!req.user,
  },
  hooks: {
    beforeValidate: [
      async ({ data, operation, originalDoc, req }) => {
        if (data?.type !== "playerFaction") return data;

        const payload = req.payload;
        const existing = await payload.find({
          collection: "factions",
          where: { type: { equals: "playerFaction" } },
          limit: 1,
          depth: 0,
          overrideAccess: true,
        });

        const conflict = existing.docs.find((doc) => doc.id !== originalDoc?.id);
        if (conflict) {
          throw new Error(
            `Only one faction can be the Player Faction at a time. "${conflict.name}" is already the Player Faction.`,
          );
        }
        return data;
      },
    ],
  },
  fields: [
    {
      name: "name",
      type: "text",
      required: true,
      unique: true,
    },
    {
      name: "type",
      type: "select",
      options: [
        {
          label: "Player Faction",
          value: "playerFaction",
        },
        {
          label: "Major Faction",
          value: "majorFaction",
        },
        {
          label: "Minor Faction",
          value: "minorFaction",
        },
        {
          label: "Corporation",
          value: "corporation",
        },
        {
          label: "Special",
          value: "special",
        },
      ],
      required: true,
      defaultValue: "minorFaction",
      admin: {
        description:
          "Player Faction = the faction our unit is currently playing as. Only one faction can carry this type at a time.",
      },
    },
    {
      name: "description",
      type: "richText",
    },
    {
      name: "reputation",
      type: "number",
      admin: {
        description:
          "This faction's standing in the world, from -100 (reviled) to 100 (revered). 0 is neutral. Adjusted manually by admins/GMs as campaign events unfold.",
      },
      defaultValue: 0,
      min: -100,
      max: 100,
    },
    {
      name: "relationships",
      type: "array",
      labels: {
        singular: "Relationship",
        plural: "Relationships",
      },
      admin: {
        description:
          "Pairwise standing between this faction and another faction, from -100 (hostile) to 100 (allied). 0 is neutral. One entry per counterpart faction.",
      },
      fields: [
        {
          name: "targetFaction",
          type: "relationship",
          relationTo: "factions",
          required: true,
          admin: {
            description: "The other faction in this pairwise relationship.",
          },
        },
        {
          name: "value",
          type: "number",
          required: true,
          defaultValue: 0,
          min: -100,
          max: 100,
          admin: {
            description: "Standing from -100 (hostile) to 100 (allied). 0 is neutral.",
          },
        },
        {
          name: "notes",
          type: "textarea",
          admin: {
            description: "Optional context for why this relationship stands where it does.",
          },
        },
      ],
    },
    {
      name: "playableFaction",
      type: "checkbox",
      admin: {
        description:
          "Whether or not this faction is playable. Some factions may be specifically intended to be unplayable based on narrative requirements.",
      },
    },
    {
      name: "startingFaction",
      type: "checkbox",
      admin: {
        description:
          "Whether or not this faction is/was available as a starting faction at the beginning of the campaign.",
      },
    },
    {
      name: "associatedCampaigns",
      type: "relationship",
      relationTo: "campaigns",
      hasMany: true,
    },
    {
      name: "coverImage",
      type: "upload",
      relationTo: "media",
      admin: {
        description:
          "Background image for the faction detail page hero. Renders translucent with a top-to-bottom fade to black. Recommended aspect ratio: 16:9 or wider.",
      },
    },
  ],
};