#!/usr/bin/env bash
# Read and validate .dealsage/app.json, then export what later steps need:
#   APP_ID            the custom app this repo publishes
#   MANIFEST_JSON     the whole manifest, compacted (recorded with the version)
#   CHECKS_JSON       the checks array with defaults applied
# Validation is deliberately jq-only (no npm dependency) so a broken manifest
# fails fast, before install. The schema of record is ../manifest.schema.json.
set -euo pipefail
. "$(dirname "$0")/lib.sh"

MANIFEST_PATH="${MANIFEST_PATH:-.dealsage/app.json}"
[ -f "$MANIFEST_PATH" ] || die "Manifest not found at $MANIFEST_PATH"
jq -e . "$MANIFEST_PATH" >/dev/null 2>&1 || die "$MANIFEST_PATH is not valid JSON"

app_id="$(jq -r '.appId // empty' "$MANIFEST_PATH")"
[[ "$app_id" =~ ^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$ ]] \
  || die "$MANIFEST_PATH: appId is missing or not a UUID (got '${app_id:-<empty>}'). Provisioning stamps it; do not edit by hand."

# Normalise checks: fill defaults, reject malformed entries with a clear message.
checks="$(jq -c '
  def bad(msg): error("checks: " + msg);
  (.checks // [])
  | if type != "array" then bad("must be an array") else . end
  | map(
      if type != "object" then bad("each check must be an object") else . end
      | if (.id|type) != "string" or ((.id|test("^[a-z][a-z0-9-]{0,39}$"))|not)
          then bad("id must match ^[a-z][a-z0-9-]{0,39}$ (got " + (.id|tostring) + ")") else . end
      | if ((.run|type) == "string") == ((.uses|type) == "string")
          then bad("check " + .id + " needs exactly one of run or uses") else . end
      | if (.uses? // "") != "" and ((.uses|IN("conventions"))|not)
          then bad("check " + .id + " uses an unknown platform check " + .uses) else . end
      | {
          id: .id,
          name: (.name // .id),
          run: (.run // null),
          uses: (.uses // null),
          required: (if .required == null then true else .required end),
          timeoutMinutes: (.timeoutMinutes // 15)
        }
    )
  | if (map(.id) | unique | length) != length then bad("ids must be unique") else . end
' "$MANIFEST_PATH")" || exit 1

manifest="$(jq -c . "$MANIFEST_PATH")"
persist_env APP_ID "$app_id"
persist_env MANIFEST_JSON "$manifest"
persist_env CHECKS_JSON "$checks"
log "Manifest: app $app_id, $(jq 'length' <<<"$checks") check(s)"
jq -r '.[] | "  - \(.id) (\(if .required then "required" else "advisory" end)): \(.run // ("platform:" + .uses))"' <<<"$checks"