#include "git-compat-util.h"

#include "config.h"

#include "repo-settings.h"

#include "repository.h"

#include "midx.h"

#include "pack-objects.h"

#include "setup.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;

}

static void repo_cfg_ulong(struct repository *r, const char *key, unsigned long *dest,

         unsigned long def)

{

  if (repo_config_get_ulong(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;

  unsigned long ulongval;

  if (!r->gitdir)

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

  if (r->settings.initialized)

    return;

  repo_settings_clear(r);

  r->settings.initialized++;

  /* 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;

    r->settings.pack_use_path_walk = 1;

  }

  if (manyfiles) {

    r->settings.index_version = 4;

    r->settings.index_skip_hash = 1;

    r->settings.core_untracked_cache = UNTRACKED_CACHE_WRITE;

    r->settings.pack_use_path_walk = 1;

  }

  /* 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, "pack.usepathwalk", &r->settings.pack_use_path_walk, 0);

  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;

  if (!repo_config_get_ulong(r, "core.deltabasecachelimit", &ulongval))

    r->settings.delta_base_cache_limit = ulongval;

  if (!repo_config_get_ulong(r, "core.packedgitwindowsize", &ulongval)) {

    int pgsz_x2 = getpagesize() * 2;

    /* This value must be multiple of (pagesize * 2) */

    ulongval /= pgsz_x2;

    if (ulongval < 1)

      ulongval = 1;

    r->settings.packed_git_window_size = ulongval * pgsz_x2;

  }

  if (!repo_config_get_ulong(r, "core.packedgitlimit", &ulongval))

    r->settings.packed_git_limit = ulongval;

}

void repo_settings_clear(struct repository *r)

{

  struct repo_settings empty = REPO_SETTINGS_INIT;

  FREE_AND_NULL(r->settings.fsmonitor);

  FREE_AND_NULL(r->settings.hooks_path);

  r->settings = empty;

}

unsigned long repo_settings_get_big_file_threshold(struct repository *repo)

{

  if (!repo->settings.big_file_threshold)

    repo_cfg_ulong(repo, "core.bigfilethreshold",

             &repo->settings.big_file_threshold, 512 * 1024 * 1024);

  return repo->settings.big_file_threshold;

}

void repo_settings_set_big_file_threshold(struct repository *repo, unsigned long value)

{

  repo->settings.big_file_threshold = value;

}

enum log_refs_config repo_settings_get_log_all_ref_updates(struct repository *repo)

{

  const char *value;

  if (!repo_config_get_string_tmp(repo, "core.logallrefupdates", &value)) {

    if (value && !strcasecmp(value, "always"))

      return LOG_REFS_ALWAYS;

    else if (git_config_bool("core.logallrefupdates", value))

      return LOG_REFS_NORMAL;

    else

      return LOG_REFS_NONE;

  }

  return LOG_REFS_UNSET;

}

int repo_settings_get_warn_ambiguous_refs(struct repository *repo)

{

  prepare_repo_settings(repo);

  if (repo->settings.warn_ambiguous_refs < 0)

    repo_cfg_bool(repo, "core.warnambiguousrefs",

            &repo->settings.warn_ambiguous_refs, 1);

  return repo->settings.warn_ambiguous_refs;

}

const char *repo_settings_get_hooks_path(struct repository *repo)

{

  if (!repo->settings.hooks_path)

    repo_config_get_pathname(repo, "core.hookspath", &repo->settings.hooks_path);

  return repo->settings.hooks_path;

}

int repo_settings_get_shared_repository(struct repository *repo)

{

  if (!repo->settings.shared_repository_initialized) {

    const char *var = "core.sharedrepository";

    const char *value;

    if (!repo_config_get_value(repo, var, &value))

      repo->settings.shared_repository = git_config_perm(var, value);

    else

      repo->settings.shared_repository = PERM_UMASK;

    repo->settings.shared_repository_initialized = 1;

  }

  return repo->settings.shared_repository;

}

void repo_settings_set_shared_repository(struct repository *repo, int value)

{

  repo->settings.shared_repository = value;

  repo->settings.shared_repository_initialized = 1;

}

void repo_settings_reset_shared_repository(struct repository *repo)

{

  repo->settings.shared_repository_initialized = 0;

}