#include "git-compat-util.h"

#include "config.h"

#include "repository.h"

#include "midx.h"

static void repo_cfg_bool(struct repository *r, const char *key, int *dest,

        int def)

{

  if (repo_config_get_bool(r, key, dest))

    *dest = def;

}

static void repo_cfg_int(struct repository *r, const char *key, int *dest,

       int def)

{

  if (repo_config_get_int(r, key, dest))

    *dest = def;

}

void prepare_repo_settings(struct repository *r)

{

  int experimental;

  int value;

  const char *strval;

  int manyfiles;

  int read_changed_paths;

  if (!r->gitdir)

    BUG("Cannot add settings for uninitialized repository");

  if (r->settings.initialized++)

    return;

  /* Defaults */

  r->settings.index_version = -1;

  r->settings.core_untracked_cache = UNTRACKED_CACHE_KEEP;

  r->settings.fetch_negotiation_algorithm = FETCH_NEGOTIATION_CONSECUTIVE;

  /* Booleans config or default, cascades to other settings */

  repo_cfg_bool(r, "feature.manyfiles", &manyfiles, 0);

  repo_cfg_bool(r, "feature.experimental", &experimental, 0);

  /* Defaults modified by feature.* */

  if (experimental) {

    r->settings.fetch_negotiation_algorithm = FETCH_NEGOTIATION_SKIPPING;

    r->settings.pack_use_bitmap_boundary_traversal = 1;

    r->settings.pack_use_multi_pack_reuse = 1;

  }

  if (manyfiles) {

    r->settings.index_version = 4;

    r->settings.index_skip_hash = 1;

    r->settings.core_untracked_cache = UNTRACKED_CACHE_WRITE;

  }

  /* Commit graph config or default, does not cascade (simple) */

  repo_cfg_bool(r, "core.commitgraph", &r->settings.core_commit_graph, 1);

  repo_cfg_int(r, "commitgraph.generationversion", &r->settings.commit_graph_generation_version, 2);

  repo_cfg_bool(r, "commitgraph.readchangedpaths", &read_changed_paths, 1);

  repo_cfg_int(r, "commitgraph.changedpathsversion",

         &r->settings.commit_graph_changed_paths_version,

         read_changed_paths ? -1 : 0);

  repo_cfg_bool(r, "gc.writecommitgraph", &r->settings.gc_write_commit_graph, 1);

  repo_cfg_bool(r, "fetch.writecommitgraph", &r->settings.fetch_write_commit_graph, 0);

  /* Boolean config or default, does not cascade (simple)  */

  repo_cfg_bool(r, "pack.usesparse", &r->settings.pack_use_sparse, 1);

  repo_cfg_bool(r, "core.multipackindex", &r->settings.core_multi_pack_index, 1);

  repo_cfg_bool(r, "index.sparse", &r->settings.sparse_index, 0);

  repo_cfg_bool(r, "index.skiphash", &r->settings.index_skip_hash, r->settings.index_skip_hash);

  repo_cfg_bool(r, "pack.readreverseindex", &r->settings.pack_read_reverse_index, 1);

  repo_cfg_bool(r, "pack.usebitmapboundarytraversal",

          &r->settings.pack_use_bitmap_boundary_traversal,

          r->settings.pack_use_bitmap_boundary_traversal);

  repo_cfg_bool(r, "core.usereplacerefs", &r->settings.read_replace_refs, 1);

  /*

   * The GIT_TEST_MULTI_PACK_INDEX variable is special in that

   * either it *or* the config sets

   * r->settings.core_multi_pack_index if true. We don't take

   * the environment variable if it exists (even if false) over

   * any config, as in most other cases.

   */

  if (git_env_bool(GIT_TEST_MULTI_PACK_INDEX, 0))

    r->settings.core_multi_pack_index = 1;

  /*

   * Non-boolean config

   */

  if (!repo_config_get_int(r, "index.version", &value))

    r->settings.index_version = value;

  if (!repo_config_get_string_tmp(r, "core.untrackedcache", &strval)) {

    int v = git_parse_maybe_bool(strval);

    /*

     * If it's set to "keep", or some other non-boolean

     * value then "v < 0". Then we do nothing and keep it

     * at the default of UNTRACKED_CACHE_KEEP.

     */

    if (v >= 0)

      r->settings.core_untracked_cache = v ?

        UNTRACKED_CACHE_WRITE : UNTRACKED_CACHE_REMOVE;

  }

  if (!repo_config_get_string_tmp(r, "fetch.negotiationalgorithm", &strval)) {

    int fetch_default = r->settings.fetch_negotiation_algorithm;

    if (!strcasecmp(strval, "skipping"))

      r->settings.fetch_negotiation_algorithm = FETCH_NEGOTIATION_SKIPPING;

    else if (!strcasecmp(strval, "noop"))

      r->settings.fetch_negotiation_algorithm = FETCH_NEGOTIATION_NOOP;

    else if (!strcasecmp(strval, "consecutive"))

      r->settings.fetch_negotiation_algorithm = FETCH_NEGOTIATION_CONSECUTIVE;

    else if (!strcasecmp(strval, "default"))

      r->settings.fetch_negotiation_algorithm = fetch_default;

    else

      die("unknown fetch negotiation algorithm '%s'", strval);

  }

  /*

   * This setting guards all index reads to require a full index

   * over a sparse index. After suitable guards are placed in the

   * codebase around uses of the index, this setting will be

   * removed.

   */

  r->settings.command_requires_full_index = 1;

}